[Farmall] tachometer

[John Hall]

Dad's working on a Cub that has something I have never seen installed on 
one--a tachometer. It appears this Cub was sold to a university or Gov. 
agency as it has a brass tag with an ID # riveted above the serial tag. 
While not a lowboy, it has the underslung exhaust and a pulley for a belly 
mower. This leads us to think it was originally sold for mowing grass and 
the tach was put on to keep track of hours for maintenance. Anybody else 
ever run across a Cub with one of these?

John Hall