12 x 9 x 2" Stainless Steel Dissection Tray with Wax StockedLY9121 sized for classroom illuminance and

sized for classroom illuminance and light-intensity investigations

Used to compare EMFs and measure internal resistance by the null-deflection method

applied force

closing when a magnet is brought near to introduce magnetic-actuated switching alongside hand-operated switches

Demonstrates the polarity-sensitive forward-bias behavior of a light-emitting diode on a base with two 4mm terminals

12 x 9 x 2" Stainless Steel Dissection Tray with Wax StockedLY9121 sized for classroom illuminance andWax lined stainless steel dissection tray grips specimen pins during anatomy, forensic, and zoology dissection work where stable pinning is required.