Decade Box, or Variable Resistance

Title

Decade Box, or Variable Resistance

Subject

Electrical Measurements

Description

A five decade variable resistor made by Max Kohl of Chemnitz. The 0.1 and 1 ohm resistors are slide wires along the front and back of the top, and the three upper ranges use coils of low-temperature coefficient resistance wire (probably constantan). Top picture is front of the box. Bottom picture is back of the box.

Source

Property of the W&L Physics & Engineering Department

Files

http://s3.amazonaws.com/omeka-net/2253/archive/files/043d0ad986136a2f209634c33c6dba31.JPG
http://s3.amazonaws.com/omeka-net/2253/archive/files/eacef7834df7fb750317adab19ba4ee3.JPG

Citation

“Decade Box, or Variable Resistance,” Digital Exhibits at Washington and Lee University Library, accessed November 20, 2017, http://omeka.wlu.edu/items/show/189.