Resistance Standard

Resistance No. 541 0.01 OHM, 0.01 ohms, 60 amps.

Flat wooden plank with 15 smooth holes of equal size in five rows of three. Each row going across shortest width. Below this is a metal (brass?) section. Whole structure is mounted on a plinth of wood. Plinth has a hole in each corner to accommodate a bolt or screw. Two terminals, one each side of a small brass plate.

Maker Elliott Bros, London.