It has the inductive clip and works great.
Vintage Dixson Inc Tach Dwell RPM Tester for 4 & 8 Cylinder Model #1501 Untested
Vintage Dixson Dixco Clip-on Timing Light Timing Light Model 318
Vintage Dixson Engine Analyzer Model 396
Vintage Dixson Engine Performance Analyzer made USA Complete Engine Testing
Vintage Dixson Dixco Clip-on Timing Light Timing Light Model 418
Vintage Dixson Engine Performance Analyzer Made in USA Untested