It can measure from a distance of 1m using laser light, and contact measurements are also possible when used with an adapter.
The pre-scaling function allows you to calculate surface speed etc. without a circumferential ring. Model number: TM-7010K (contact/non-contact type/multi-function)
Measurement range: 6.0 to 99999.9 rpm
Accessories: 3 rubber contacts, circumferential ring (circumference 1/10m), 4 AAA alkaline batteries (included for testing), carrying case, contact measurement adapter, 10 Scotchlite tapes
