Battery Eliminator, 1A, Alternate Model Material_Polyethylene Pack of 50 solid rubber

Pack of 50 solid rubber stoppers in assorted sizes provides acid and alkali resistance for comprehensive laboratory vessel sealing applications

500 and 1000 lines/mm gratings

Adjustable flash-frequency control across this improved stroboscope lets students isolate periodic motion from rotating machinery

Hands-on fold-and-fault model with manipulable rock strata

25 inches long

Battery Eliminator, 1A, Alternate Model Material_Polyethylene Pack of 50 solid rubberUsed to replace dry cell stacks at the bench, this 1A battery eliminator handles AC and DC simultaneously to power circuit experiments without rotating in fresh disposable batteries.