Tach / RPM. Untested and sold as-is. 6 and 8 cylinder scales.
Vintage Hawk 610 Diagnostic & Tuneup Analyzer 6 Function 8 & 6 CYL 9V Battery
Vintage Sears Penske Automotive Tuneup Analyzer model 161.21042 - Untested
Vintage Sears Penske Automotive Tuneup Analyzer model 21042
Vintage Hawk Tune-up Analyzer Hand Held Engine Diagnostic Tool. Untested.
Vintage Hawk 743 Tune-Up Analyzer Engine Diagnostic Tool
Vintage Hawk Model 610 Mini-Analyzer - Engine Diagnostic Tool
