Portable electrical test set for checking batteries and telegraph and telephone lines. Probably for military use.

Physical Description

Wooden box with metal corner straps. Hinged wooden lid with metal strap and closed by two metal catches. Direct current ammeter mounted on wooden backing board inside box, just beneath lid. Ammeter graduated 0-50 milliamps. Two screw terminals to left of meter, one toggle switch to right. Brass plate with engraved operating instructions and diagrams screwed to underside of lid. Instructions headed "TEST SET PORTABLE No. 2"

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