Reply To: Proper faceting speeds › Forums › Beginner Questions › Proper faceting speeds › Reply To: Proper faceting speeds December 31, 2017 at 4:33 pm #3709 Alan BalmerKeymaster @alanbalmer These devices are relatively inexpensive. Look for them listed as “non-contact tachometer”, “optical tachometer”, or “photo tachometer”. Amazon has a wide selection.
