bids are invited for category - 1 1 concave lens, dia 50mm f.l.20cm 2 convex lens, dia 50mm f.l. 20cm 3 convex mirror, f.l.20cm, dia 50mm 4 concave mirror, f.l.20cm, dia 50mm 5 cylinder hollow ( metal ) , 38mm, aluminium 6 electric motor model, workable on 6v - 3amp dc supply. 7 lens holder, wooden ‘v’ shaped 8 meter bridge ( wheatstone bridge ) heavy sunmica base to avoid bending ( pencil jockey ) 9 vernier caliper wheel type, 12 cm, stainless steel. 10 screw gauge, stainless steel rod 20mm. 11 spherometer, brass, single disc 1 / 100mm 12 parallelogram apparatus ( gravesand apparatus ) provided with three slotted weights of 250gms & two z-pulley stand type ( wooden ) category - 2 13 sonometer, teak wood ( brass fitting ) 14 travelling microscope l.c. 0.01mm 2-motion wooden box ( superior quality ) . 15 optical bench brass pipe, 1meter long ( half shaper riders ) . 16 newton colour disc 17 pn junction diode apparatus ( semi conductor diode app. ) complete kit with two meters on board ( superior ) . 18 slinky spring, 75x50mm. 19 copper wire ( dcc wire ) double cotton covered for connections 500gm. 20 rheostat ( brass rod ) , 4.3cm dia tube, 15cm 21 plug key, one way with ½ brass block, superior quality 22 plug key, two way with ½ brass block, superior quality 23 hook’s law apparatus, with weights, big size 24 ohms law apparatus category - 3 25 resistance box 1 to 500 ohm. 26 resistance box, ( brass ) plug type; constantan coil, 1 / 2” brass block, teak wood case 1 to 10000 ohm. 27 white screen, wooden. 28 screw driver set imported 29 spirit level 6 plastic 30 equilateral glass prism 60x60x60º, 50mm ( superior quality ) 31 bob with hook ( used in simple pendulum experiment ) brass dia 12mm. 32 bob set of 6 metals ( with hook ) ( brass aluminium copper zinc iron & lead ) dia 18mm 33 bob with hook ( used in simple pendulum experiment ) brass dia 18mm. 34 inclined plain ( without weights ) 100mm with roller & pan superior quality. 35 meter scale half meter superior quality ( wooden ) . 36 meter scale half meter superior quality ( wooden ) . category - 4 37 hooks law apparatus with weights big size. 38 drawing board ( superior quality soft wood ) 12x18. 39 simple pendulum apparatus stand type ( with retort stand + 1 bob + cork & thread ) 40 mirror strip 4x1 with plastic stand. 41 battery eliminators ( superior quality ) dc 2-12v dc 2amp 42 digital barometer / altimeter / compass ( 3 in 1 ) 43 resonance apparatus with 25mm s.s. pipe. 44 rising table ( complete ) with capillary tube clamp & side rod attachment used in experiment : surface tension of liquid by capillary rise method 45 searles apparatus ( young modulus ) , brass. with two 3.5 nut & bolt 46 wall mount for searles apparatus ( young modulus ) with two screw & washer 47 slotted weight ( with hanger ) ( iron black painted ) cap. 2.5kg ; 5x500gm 48 slotted weight ( with hanger ) ( iron chrome plated ) 500gm ; 5x100gm category - 5 49 spring balance tubular acrylic 500gm 50 stop watch digital 1 / 100 sec racer make 51 thermometer ( 30cm length ) -10 to 110c mercury. 52 tunning fork ( set of 8 ) in thermocole box superior quality. 53 wire cutter. 54 board pin packet. 55 paper pin packet. 56 cotton thread ( roll ) . 57 glass mirror plate, 10cm x 10cm. 58 light box with holder and bulb ( wooden ) . 59 educational raxine charts ( size 75x100cm ) ; physics: electricity & magnetism ( white raxine ) electro magnetic induction 60 educational raxine charts ( size 75x100cm ) ; physics: modern physics ( white raxine ) photoelectric effect 61 educational raxine charts ( size 75x100cm ) ; physics: atomic & nuclear physics ( white raxine ) nuclear fission & fusion 62 educational raxine charts ( size 75x100cm ) ; physics: mechanics ( white raxine ) newtons laws of motion total quantity : 5