description mini laser photo tachometer counter mini laser photo tachometer/counter measures rotating objects up to 1.6 ft away. measurements are displayed on the 5-digit lcd. counter function displays up to 99,999 revolutions. comes complete with 9v battery and reflective tape. california proposition 65 warning. features make non-contact rpm measurements of rotating objects use reflective tape on object to be measured and point the integral laser large 5 digit lcd display with back lighting memory button for last/maximum/minimum readings counter function counts up to 99,999 revolutions rugged, double molded housing complete with 9-volt battery and reflective tape specifications acme tools brand name extech acme tools part number 461920 assembled weight (lbs) 0.0 california proposition 65 warning required yes country of origin china depth (in) 1.6 gauge measures rpm gauge range 2 to 99,999rpm globaltradeitemnumber (gtin) 00793950469200 height (in) 6.2 internal supplier part # 461920 internet product code (ipc) 1f24240bd02 manufacturer warranty manufacturers limited warranty package weight 0.594 package weight (lbs) 0.594 upc 793950469200 width (in) 2.299999