This working DC VOLTMETER was made by A & M INSTRUMENT to US SPECIFICATION MIL-A-6752A.

AN PART NO. AN3203V30

A & M P/N 235-005

STOCK NO 6625-00-235-4782

SER NO 2927

Size is standard 2-1/4" diameter.

Tested and working as shown in last photo, but I do not claim that this is or can be certified as airworthy. Sold as a collectable for display or for non-aeronomical applications.

Shipped with USPS.