AC Positive Crankcase Ventilation Tester

A Vintage AC Positive Crankcase Ventilation Tester in the original metal Box. This is a General Motors AC Delco Service Product from the 1960's. The Steel
Advertising Box Measures about 6 1/4" long by 3 1/2" wide and 2 3/4" tall. The front has a reminder to Check the AC Ventilation System every oil change. It is
complete with all pieces and the instructions and appears to have never been used. A Nice Automotive Collectible suitable for displaying. $50.00