Single-Phase Rheostat, 300 x 56mm Meters_Electrical Wood-baseboard sonometer 98 x 9cm

Wood-baseboard sonometer 98 x 9cm on four feet

used to map the circular field around a current-carrying wire and confirm the right-hand rule

covering core dispersion and refraction shapes for ray-box optics work

Nickel-plated T-pins provide secure specimen pinning with broad heads for stable dissection board mounting in biology laboratories

this 28 SWG bare constantan wire on a 125g reel holds resistance stable as the surrounding circuit heats up

Single-Phase Rheostat, 300 x 56mm Meters_Electrical Wood-baseboard sonometer 98 x 9cmThree hundred thirty ohm 0. 95A single phase rheostat on a 300x56mm tube with cover protected constantan winding and 4mm safety socket terminals, at plus or minus 10% nominal value tolerance.