Resistance Substitution Box Biology_Health & Genetics 25-inch aluminum tuning fork features

25-inch aluminum tuning fork features a round stem that grips firmly without damping the vibration

Spring-loaded 4mm slit on a rod attachment opens and closes smoothly under finger pressure

2A rheostat with oxidized constantan winding on a 300x44mm vitreous-enameled tube

restoring UV-C output in the compatible goggle sanitizer cabinet once the original lamp reaches end of service life

this Hall's car supports dynamics work on inclined planes with weights and pulleys

Resistance Substitution Box Biology_Health & Genetics 25-inch aluminum tuning fork featuresTwelve position substitution box rotating through 100 ohms to 470k ohms at 1W and plus or minus 1%, dropping a known resistance into a circuit without rewiring during Ohm's law work.