Single-Phase Rheostat, 300 x 56mm Meters_Electrical Primary and secondary copper coils

Primary and secondary copper coils with a sliding iron core and 4mm terminals

Compact 2mm-plug connecting lead in the small-scale lead family

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

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

Mid-decade capacitance box stepping 1nF to 10nF in 1nF increments at plus-or-minus 5% on 63V

Single-Phase Rheostat, 300 x 56mm Meters_Electrical Primary and secondary copper coilsThree 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.