Harpenden Anthropometer

Gives a direct reading, to the nearest millimetre, over a range of 50 mm to 570 mm. It is constructed mainly of light alloy. Its sliding member operates via miniature ball-bearing rollers in order to ensure a movement which is free yet without cross-play.
Supplied in a carrying case, complete with straight and recurved branches, a spare counter and beam extensions for the measuring of heights of up to two metres.
Weight in case: 2.8 kg approx