Bench Digital pH Tester, EI 0962 (Discontinued) Length_125mm Five-pulley set of 50mm single

Five-pulley set of 50mm single plastic pulleys on steel frames with end hooks

the curved-face geometry letting beams enter along any radius for clean Snell's law angle work in ray-box and refraction setups

flame heating the bar until thermal expansion stops it from passing through the gauge opening

Used to test how mass per length controls pitch

Hand-painted skin cross-section enlarged 300 times exposes epidermal layers

Bench Digital pH Tester, EI 0962 (Discontinued) Length_125mm Five-pulley set of 50mm singleDiscontinued benchtop digital pH meter designated EI 0962, measuring sample acidity on a fixed workstation in laboratory quality control and teaching environments.