purchase of measuring instruments for power system lab in electrical and electronics engineering education department. , ammetermi 0-2 a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammetermi 0-5 a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammetermi 0-10 a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammetermi 0-15 a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammetermi 0-20 a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammetermi 0-30 a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammetermi 0-50 a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammetermi 0-2.5 / 5a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammetermi 0-10 / 20 a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammetermi 0-15 / 30 a portable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-50 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-75 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-150 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-250 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-300 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-500 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-600 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-50 / 75 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-75 / 150 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-150 / 300 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmetermi0-250 / 500 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-1 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-2 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-5 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-15 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-1 / 2 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-2.5 / 5 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-5 / 10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-10 / 20 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-15 / 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc10a-0-10aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmeter mc0-10 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmeter mc0-15 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmeter mc0-150 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmeter mc0-250 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmeter mc0-300 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmeter mc0-15 / 30 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , voltmeter mc0-150 / 300 vportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter upf75v, 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter upf125 / 250 / 500 v , 2.5 / 5 / 10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter upf150 / 300 / 600 v, 5 / 10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter upf150 / 300 / 600 v, 10 / 15 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter upf150 / 300 / 600 v, 15 / 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter upf75 / 150 v, 15 / 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter lpf125 / 250 / 500 v, 2.5 / 5 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter lpf125 / 250 / 500 v, 5 / 10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter lpf125 / 250 / 500 v, 10 / 20 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter lpf125 / 250 / 500 v, 15 / 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter lpf150 / 300 / 600 v, 5 / 10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter lpf150 / 300 / 600 v, 10 / 20 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1f wattmeter lpf150 / 300 / 600 v, 15 / 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mi0-10 maportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mi0-50 maportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mi0-100 maportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mi0-500 maportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mi0-10?aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mi0-100?aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mi0-300?aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mi0-500 ?aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-10 maportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-50 maportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-100 maportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-500 maportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-10?aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-100?aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-300?aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , ammeter mc0-500 ?aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter upf centre zero type75v, 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter upf centre zero type125 / 250 / 500 v , 2.5 / 5 / 10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter upf centre zero type150 / 300 / 600 v, 5 / 10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter upf centre zero type150 / 300 / 600 v, 10 / 15 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter upf centre zero type150 / 300 / 600 v, 15 / 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter upf centre zero type75 / 150 v, 15 / 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter lpf centre zero type125 / 250 / 500 v, 2.5 / 5 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter lpf centre zero type125 / 250 / 500 v, 5 / 10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter lpf centre zero type125 / 250 / 500 v, 10 / 20 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter lpf centre zero type125 / 250 / 500 v, 15 / 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter lpf centre zero type150 / 300 / 600 v, 5 / 10 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter lpf centre zero type150 / 300 / 600 v, 10 / 20 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , 1fwattmeter lpf centre zero type150 / 300 / 600 v, 15 / 30 aportable moving iron ammeters must be housed in bakelite casewith knife edge pointer &antiparallaxmirror, scale of 140mm ( approx. ) length , quick response , rated accuracy : class 1.0 ( 1% of full scale value ) as per is 1248-84 , rheostat20 o, 10 athe rheostat should be wire wound sliding rheostats with best quality cu / ni or ni / cr alloy ressistance wire having very low temp.coefficient and wire is protected with high temperature ressistance compound. the winding should be on vitreous enammelled steel tube or vetrified ceramic fitted with aluminium die cast stands / fabricated steel stands. contact should be of phosphor bronze or self lubricating copper graphite fitted on brass slider, slides on solid drawn brass rods , rheostat9 o, 8 athe rheostat should be wire wound sliding rheostats with best quality cu / ni or ni / cr alloy ressistance wire having very low temp.coefficient and wire is protected with high temperature ressistance compound. the winding should be on vitreous enammelled steel tube or vetrified ceramic fitted with aluminium die cast stands / fabricated steel stands. contact should be of phosphor bronze or self lubricating copper graphite fitted on brass slider, slides on solid drawn brass rods , rheostat1000 o, 1.2 athe rheostat should be wire wound sliding rheostats with best quality cu / ni or ni / cr alloy ressistance wire having very low temp.coefficient and wire is protected with high temperature ressistance compound. the winding should be on vitreous enammelled steel tube or vetrified ceramic fitted with aluminium die cast stands / fabricated steel stands. contact should be of phosphor bronze or self lubricating copper graphite fitted on brass slider, slides on solid drawn brass rods , rheostat50 o, 5 athe rheostat should be wire wound sliding rheostats with best quality cu / ni or ni / cr alloy ressistance wire having very low temp.coefficient and wire is protected with high temperature ressistance compound. the winding should be on vitreous enammelled steel tube or vetrified ceramic fitted with aluminium die cast stands / fabricated steel stands. contact should be of phosphor bronze or self lubricating copper graphite fitted on brass slider, slides on solid drawn brass rods , rheostat100 o, 5 athe rheostat should be wire wound sliding rheostats with best quality cu / ni or ni / cr alloy ressistance wire having very low temp.coefficient and wire is protected with high temperature ressistance compound. the winding should be on vitreous enammelled steel tube or vetrified ceramic fitted with aluminium die cast stands / fabricated steel stands. contact should be of phosphor bronze or self lubricating copper graphite fitted on brass slider, slides on solid drawn brass rods , rheostat145 o, 2.5 athe rheostat should be wire wound sliding rheostats with best quality cu / ni or ni / cr alloy ressistance wire having very low temp.coefficient and wire is protected with high temperature ressistance compound. the winding should be on vitreous enammelled steel tube or vetrified ceramic fitted with aluminium die cast stands / fabricated steel stands. contact should be of phosphor bronze or self lubricating copper graphite fitted on brass slider, slides on solid drawn brass rods , rheostat50 o, 10 athe rheostat should be wire wound sliding rheostats with best quality cu / ni or ni / cr alloy ressistance wire having very low temp.coefficient and wire is protected with high temperature ressistance compound. the winding should be on vitreous enammelled steel tube or vetrified ceramic fitted with aluminium die cast stands / fabricated steel stands. contact should be of phosphor bronze or self lubricating copper graphite fitted on brass slider, slides on solid drawn brass rods , rheostat270 o, 2.5 athe rheostat should be wire wound sliding rheostats with best quality cu / ni or ni / cr alloy ressistance wire having very low temp.coefficient and wire is protected with high temperature ressistance compound. the winding should be on vitreous enammelled steel tube or vetrified ceramic fitted with aluminium die cast stands / fabricated steel stands. contact should be of phosphor bronze or self lubricating copper graphite fitted on brass slider, slides on solid drawn brass rods , stop watch analog , stop watch digital , power factor meter analog , power factor meter digital , digital multi meter , clip on ammeter digital0-100a , single phase auto transformerinput voltage: 230v, 1 phase, 50 hz;output voltage:0 - 270 v, 15a , three phase auto transformeroperating voltage: 0 - 415 - 440 volts; standard output voltage: 0 - 470 volts