This tester is used but in excellent condition. I bought it new back in the late seventies.but have not used it in many, many years as I've been driving diesels since the eighties. I could not find the user instructions.
TC Service Company 13,000 RPM Air Grinder - AD26314
Tach Pin Kit/Quick Tach Kit Compatible W/ Takeuchi TL8 TL10 TL10V2 TL12 TL12(R2)
for Mercedes Benz central control instrument seat distributor CAN plug
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VINTAGE SEARS 282196 IGNITION TESTER INSTRUMENT NEW OLD STOCK SEALED