The TRIPLETT Volt-Ohm-Milliammeter Model 1200-A is a vintage analog multimeter made in the United States. It is designed to measure voltage, resistance, and current up to milliampere levels. 

Selling for display or parts only. It might work with good batteries, but not tested. This takes a soldered in D-cell and #763 22 1/2 volt battery (See last 2 photos. Batteries not included).

This unit is from a collection of my mother -in-laws father who was a WWII veteran, electronics engineer and radio operator/repairmen. 

Please check pictures as they are part of the description. Thank you for looking.