Hareft s Apparatus, Mounted on a wooden stand with a scale, comprises a three-limbed glass tube with rubber tubing on the centre. For comparing the densities of liquids by measuring the height of two columns of liquid produced by applying suction, Dimensions 68 x 30 x 15 cm
Features 60 lumens of LED light and brilliant 3 watt bulb with choice of high beam, low beam, or strobe. The lightweight headlamp is made of an aluminum alloy and ABS plastic and has an easy to operate side switch even when wearing gloves. weighs 6oz and takes 3 AAA batteries.
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