It is untested.
Vintage SEARS PENSKE Dwell Tachometer 21013 In Box & Owner’s Manual
Vintage Sears Penske DWELL TACHOMETER Model 21015 Untested Used
Vintage SEARS PENSKE Dwell Tachometer 21013 In Box UNTESTED
Vintage Sears Penske DWELL TACHOMETER #21015 **UNTESTED**
Vintage SEARS PENSKE Dwell Tachometer 21013 & Owner’s Manual Looks New
Vintage Sears Penske Dwell Tachometer Tool Model 244 21014 Automotive
