Open-Type Economy Rheostat, Model B5 Included_Rod & Base 5-inch unfinished birch plywood oven

5-inch unfinished birch plywood oven rack push puller supports hot-rack manipulation without direct hand contact

channeling displaced water cleanly into a collecting beaker for Archimedes-principle work

and magnetic force interactions

chemical analysis

Eight aluminum-shank tuning forks tuned to scientific pitch (C4 = 256Hz) and ranging from 5 9/16 to 7 1/8 inches

Open-Type Economy Rheostat, Model B5 Included_Rod & Base 5-inch unfinished birch plywood ovenUsed as a series resistor or potentiometer in adjustable current circuit work, this open type slide wire rheostat carries oxidized constantan winding on a pipe with three 4mm sockets.