Standard Rheostat, 135Ω, 1.4A Max Botany_Botany Charts & Models paired with two 50N spring

paired with two 50N spring balances and two wrest pins so students can verify the laws governing frequency

Hardwood 25-slot slide storage box safely holds standard microscope slides for small-collection organization and lab bench storage

Momentary-contact push-button switch on a base with two 4mm terminals

Sliding-top wooden box 4 x 2 x 1 inches

Visualizes the Venturi effect on an 18-inch backboard

Standard Rheostat, 135Ω, 1.4A Max Botany_Botany Charts & Models paired with two 50N springHundred thirty five ohm 1. 4A standard rheostat with constantan winding on a vitreous enameled steel tube, supported on die cast end pieces with a nickel plated phosphor bronze sliding contact.