Vacuum Pump with 200mm Pump Plate Subcategory_Test Strips 75 x 2 inch chrome-steel

75 x 2 inch chrome-steel horseshoe puts a stronger gap field on offer than the 4-inch model

Two rectangular slots accept square or round rods up to 16 mm in this aluminum alloy multipurpose clamp holder

step-up/step-down ratios

Tandem double plastic pulley pairing 38mm and 50mm low-friction wheels on an open-sided steel frame

polished with ground edges for image-formation experiments in introductory optics

Vacuum Pump with 200mm Pump Plate Subcategory_Test Strips 75 x 2 inch chrome-steelHand operated vacuum pump with a 200mm copper pump plate and rubber seal, a battery free source of partial vacuum for bell jar demonstrations without external power.