Looks to me like the ticks on the vernier are 10ths of a degree?
I guess you can line up the zero on venier with the 1° marks on the gauge to set it pretty accurately? ...But for $10 more, you can get 1° detents with the HD. I suppose a look at the manual would answer my question.
--Nathan, TX. Hire the lazy man. He may not do as much work but that's because he will find a better way.