Nice mechanical 3 3/8" SW tach that's ready to roll. From my understanding this tach is somewhat rare and from approximately 1956/57 during a transitional period. It still has the Wings style needle but without the Wings logo. I purchased this from a member here last year but ended up keeping the electrical tach on my truck. Figured I'd let someone else get some use out of it. The tach comes with a 90 degree adapter, however, I found a straight adapter I had planned on using which I will include with the sale of the tach so you'll have a choice of whichever works for your application. 190 shipped to the lower 48.