JAPSON - Model JP13100-13 -Resistance Box Plug Type (Constantan / Manganin Coil)

Precision quality consisting of 12mm/10mm (approx. 1/2 inch) thick rectangular brass block, non inductive, double covered Eureka Constantan wire or constantan wire is wound on bakelite spool, enclosed in a wood box. Accuracy for Constantan Coil ±0.05% to ±0.1percentage and for Manganin Coil ±0.02percent to ±0.05percent.