Plastic dial cover is faded and popped off-see pics. Dial looks pristine. Could put back on or find a less faded lens cover to keep greasy diesel mechanic hands from smearing the dial.
Blue Point SP500 Cummins Diesel Timing Gauge Tool Set
Blue Point By Snap On Cummins Diesel Timing Gauge SP500 NICE
Snap-On Diesel Timing Gauge M3558
Vintage Snap-on™ Detroit Diesel Injector Timing Gauge M3563 in Case
Snap On Detroit Diesel Injector Timing Gauge M3563 NICE