Machine Tools/MECHANICAL SURFACE ROUGHNESS GAUGE?
Would you know where I can purchase a vintage mechanical
surface roughness gauge, that can measure the average roughness
on round objects?, not the digital roughness testers made today!
Not real sure what you are looking for. Before the (expensive)electronic gages
I always used a surface finish comparator like this one at MSC.
www.mscdirect.com MSC Part #:67642678 I still have one in my box that I use
all the time.
Other than that just try some used tool stores. http://www.brothersmachinery.com/
is close to me and I use them when I can.
Hope that helped. Good luck.