Pulley Plastic Ball Bearing Tandem, Triple Triple Plastic Pulley In Tandem, On An Open Sided Steel Frame, With Hooks At Each End Carrying Three Ball Bearing Plastic Pulleys With Diameters Of 25, 38 And 50 mm, Inner Gap Of Pulley: 3 mm, Overall Length Is 17.6 Cm
Double Concave Optical round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, Size: 150mm focal length, 50mm diameter and 5.5mm thick
Rheostats - Standard, Resistance 135 Ohms, Max. Current 1.4 Amp, Heavily Oxidized Constantan (Copper-Nickel Alloy) Wire On A Vitreous Enameled Steel Tube, 2;4 mm Terminal Posts Which Are Fitted To Facilitate External Connection Conventional 4 mm Plug, Phosphor Bronze
Plug Switch - One Way Two Brass Blocks With 4mm Insulated Terminals With Tapered Plug With A Fluted Top Are Mounted On A Wooden Base, An Accurately Tapered Plug With A Fluted Top Fits Into The Tapered Hole Between The Two Blocks, Ensuring Very Low Contact Resistance.
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