Original Japanese WWII Navy D.C. Voltmeter with Wooden Housing by TEW British Helmets The cap still has the

The cap still has the original size tag under the sweat band on the right rear side: 7

Front support block must be supplied by the purchaser

even after over 100 years

for "Civil" issue

Comes complete with an original magazine (a non-functional magazine will be substituted where prohibited)

Original Japanese WWII Navy D.C. Voltmeter with Wooden Housing by TEW British Helmets The cap still has theOriginal Item: A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit. A voltmeter in a circuit diagram is represented by the letter V in a circle. These were widely used by the Imperial Japanese Navy during WWII, as there were numerous electrical circuits and devices on ships that needed