11 / wbtidc / 2021-22 supply of sound level meter lux meter laser range finder device to different mv offices under transport department government of westbengal , sound level meter specification :- sound level meter / noise level meter 30 decibel - 130 decibel. power source alkaline batteries ( non-rechargeable ) minimum level of noise / sound measuring ( db ) 30 decibel maximum level of noise / sound measuring ( db ) 130 decibel resolution ( db ) 0.1 portable wireless printer without display lcd , lux meter specification :- lux of 0 - 200, 000, lux luxmeter batteries ? : ? 1 9v batteries required. ( included ) product dimensions ? : ? 10.16 x 2.54 x 20.32 cm; 453.59 grams asin ? : ? b005a0etxy item weight ? : ? 454 g item dimensions lxwxh ? : ? 10.2 x 2.5 x 20.3 centimeters , laser range finder device specification :- measuring range: 0.15-40m and measuring accuracy + / -2mm measuring time <0.5sec and automatic shut down 5 mins laser class 2, laser type 635nm and display backlight, buzzer application:length measurement, continuous measurement, area measurement, volume measurement and simple pythagoras measurement package contents: 1 measuring device, 2 aaa batteries ( 1.5 v lr03 )