US$ 19.99
this motor-generator pairs a split-ring commutator against slip rings with bulb indicators
Polyhedral 120mL glass alcohol lamp ships with a metal cap and fiber wick for low-temperature bench heating in chemistry and biology demonstrations
Enlarged three-times life size with seven separable parts exposing cornea
Triple tandem plastic pulley with 25/38/50mm ball-bearing wheels on an open-sided 17
a screen and lid
Hand Made Wooden Test Tube Spice Rack with 12 Borosilicate Glass Test Tubes, 6 inch Clearance this motor-generator pairs a split-ringHandmade wooden spice rack holds twelve 6 inch borosilicate glass test tubes with caps and includes a filling funnel for kitchen to lab cross over gifting.
US$ 19.99
US$ 19.99
US$ 45.00