Tachometers for old trucks and cars
These tachometers have low rpm ranges available, like 0-4000 RPM, which make sense for old vehicles. They also have 270 degree dials and are designed to mount in the dash or on top using a cup. Some have hour meters.
Currently, I think these are only available in 12 volt neg ground systems. I will see what I can do to get a 6 volt positive ground application. I also think we can fix something up for military 24 volt systems with sealed distributors.
I don't have these available yet but will put the information here when I do.