11 x 7.5" Aluminum Dissection Tray with Wax Chemical_Copper (II) Chloride Mid-range single-decade resistance box stepping

Mid-range single-decade resistance box stepping from 100 ohms to 1000 ohms in 100-ohm increments

silicon tubing in a 5-by-1 mm profile supports biology laboratory runs where cross-contamination between experiments matters

and 60mm sheaves on a 4-inch mounting rod

tall form beaker is made of Borosilicate 3

dropping into the demonstration meter to convert it into a 0-100mA ammeter for medium-current student circuits

11 x 7.5" Aluminum Dissection Tray with Wax Chemical_Copper (II) Chloride Mid-range single-decade resistance box steppingWax lined aluminum dissection tray grips insect pins and specimen markers through repeated dissection sessions in introductory biology labs.