Old unit not really sure it works. Looking looks in good shape. 
Fox Valley Engine Power Timing Light 825 / Sears / Craftsman timing light.
SUN ANALYZER TIMING LIGHT NOS NEW OLD STOCK SUN POWER TIMING LIGHT
Vintage Automotive Timing Light, Milton # 1241 DC power timing light
NOS VINTAGE Milton Automotive Timing Light 1241 DC Power Timing Light USA Cars
Kar Check DC, Power Timing Light, Automotive Tool, Supply, , Blue
Vintage RAC DC Power Timing Light and Remote Starter Switch Untested
