Triplet CK-8455 L2 Bell System Telephone Loop Tester New Without Battery 

New, Old stock, KS-8455L2 with leads, leather protective case. 

This meter has never been used. It has nice angled bed of nails clips with piercing pins. This meter was used by telephone installers and repairmen. It is a volt/ohm meter that can be used to test DC voltage from 0 to 100 volts, test for grounds, test for short circuits, line crossings, and it could test the number of ringer equipped phones that were in your home.