Epoxy-Coated Steel Wire Test Tube Rack, 24-Hole, 15-16mm Hypotenuse_35mm Wooden-frame abacus with three U-shaped

Wooden-frame abacus with three U-shaped steel wires carrying 20 plastic beads each on a 13 by 6 inch base

the high-microfarad decade for slow-RC-charging and energy-storage demonstrations

with numbered and lettered positions and a stacking design that locks against lateral movement

specimen transfer

this metal wave apparatus pairs the rotary handle with a degree scale so students can read phase against vertical displacement

Epoxy-Coated Steel Wire Test Tube Rack, 24-Hole, 15-16mm Hypotenuse_35mm Wooden-frame abacus with three U-shapedCoated with chemical resistant epoxy and rated to 121 C, this steel wire test tube rack holds 24 tubes of 15 16 mm diameter in a four by six grid for drying and storage.