I have a couple of older Shimpo digital meters that can do both. The have a selector switch on the front and different attachments. For feet per minute they use a small wheel.
-----Original Message-----
From: OldToolmaker via groups.io <old_toolmaker@...>
To: Carl <carl.blum@...>; [email protected]
Sent: Fri, Jan 6, 2023 7:43 am
Subject: Re: [Unimat] Speed measurement
Surface Feet per Minute is a factor of more than just a measurement of RPM alone. It is a calculation of RPM and Diameter.
