resistance secondary standard
Date: circa 1918
Inventory Number: 1997-1-0226a
Classification: Resistance Standard
Dimensions:8.5 x 9.3 x 6 cm (3 3/8 x 3 11/16 x 2 3/8 in.)
Description:
The resistance consists of a small hard-rubber block on which a cylinder has been set. Inside the cylinder is a coil linked to the two protruding metallic side leads and the two binding posts.