Slit, Five single slits of different widths in a slide frame. Specifications: Slit widths: 0.1/ 0.2/ 0.4/ 0.8/ 1.6 mm, Dimensions: 50x50 mm2, Weight: 0.02 kg
Pulley, Single Sheave, Pulleys wheels are made of plastic and mounted securely in an aluminum housing with a hook on both the top and bottom for suspension, Size: 50mm