This Weston milliammeter measures current at a more sensitive range than the ammeter (a milliamp is one thousandth of an amp). This was the Weston Corp’s first model of milliammeter, produced between the 1910s and 1930s.
17 x 15 x 9 cm
Matthew J. Brown
1910s to 1930s
NJIT Otto H. York Department of Chemical and Materials Engineering
weston, milliammeter, milliamp, ammeter, current, measuring instrument