Parallel and Series Circuit Demonstrator Subcategory_Racks and Stands Pack of 10 Stoddard test

Pack of 10 Stoddard test tube clamps in stainless steel with finger grip securely holds test tubes during heating

Sixteen-SWG bare constantan wire on a 125g reel — a copper-nickel alloy with a low temperature coefficient that holds resistance steady across a wide temperature range

designed so seated students read the needle without parallax error from a steep viewing angle

rated to 1 amp and terminated on a 45 cm coaxial cable for suspension and electromagnetic induction investigations

Plastic-bodied wave apparatus with eccentric discs that drive metal rods up and down as the handle turns

Parallel and Series Circuit Demonstrator Subcategory_Racks and Stands Pack of 10 Stoddard testFive bulb circuit demonstrator with 8 removable metal bars on a heavy base, letting students rearrange bars to convert between series and parallel topologies on the same set of lamps.