This is a 1950s? 60s? Alternator Voltage and Regulator tester I believe from an engine analyzer set up. (the big roll around things service stations used to have). Clould be a stand alone unit but looking at the connections it appears to plug into something. Kal Equipment test products brand. Im guessing at the age. Unknown actual unit it came from. Model T-143.Estate auction find. Used condition. Some scratches and lens is yellowed but overall good condition Cord looks to be ok. I dont know how to test it so being sold as is. Great to replace a lost of badly damaged one. See pics for details. Comes as pictured. Thanks for looking.
