US$ 17.95
supplied dry so the user adds acid and charges it before running heavy-current electrolysis loads
Cork-lined four-prong jaws grip glassware up to 4
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
bare copper
Resistance Substitution Box Biology_Health & Genetics supplied dry so the userTwelve 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.
US$ 17.95
US$ 17.95
US$ 17.95
US$ 17.95
US$ 17.95