Ultrasonic measuring laser level,CJL62, 6017,6018, 8150, CJ065, CJS61, 6019,8159. Ultrasonic measuring laser levelCJL62Key features1, Mode ------ Choose metric or Ft/in2, Read ------ to take a measurement3, Set ----- to measure from front end or back end4, + ------ for adding distances5, x ------ for multiplying 6, = ------ for getting totals7, Min ------ to input into memoryAccurate results ...