• Technical index Effective range: 99999.9M
• Wheel diameter: 318mm(12.5inches)
• Operation environment: for outdoor use; bigger wheel used for rugged surface measurement; preferential working temperature:-10-45℃
• Accuracy: Generally ±0.5% on level ground
• Measurement unit: Meter; Decimeter

  Features The gear driven counter is put in a firm plastic box The five-digit counter has a manual reset device. The heavy metal folding handle and bi-component rubber handle are in accordance with ergonomics. Engineering plastic meter wheel and resilient rubber surface are used. A spring folding bracket is used also.   Use method Stretch and straighten and grip of the range finder, and fix it with the extension sleeve. Then unfold the arm-brace and zero the counter. Put the distance measuring wheel gently at the starting point of the distance to be measured. And make sure that the arrow is aimed at the initial measuring point. Walk to the end point and read the measured value. Note: Take the line as straightly as possible if you are measuring the straight-line distance; and walk back to the end point of the measurement if you outstep it.    ● Wall to Wall Measurment Place measuring wheel on the ground, with the back of your wheel up against the wall.Proceed to move in a straight line to the next wall,Stop the wheel up againet the wall.Record the reading on the counter.The reading must now be added to diameter of the wheel. ● Wall To Point Meassurment Place measuring wheel on the ground,with the back of your wheel uo against the wall,Proceed to the move in a straight line trhe end point,Stop the wheel with the lowest point over the make.Record the reading on the counter,The reading must now be added to the Readius of the wheel. ● Point to Point Measurment Place measuring wheel on the starting point of the measurment with lowest point of the wheel on the mark.Proceed to the next mark at the end of the measurement.Recording the reading one the counter.This is the final measurement between the two points.