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  • 3-Point Digital Calipers
  • 3-Point Digital Calipers in Case
  • Illustration of 3-point caliper measurement

3-Point Digital Calipers

Getting an accurate measurement of router bits with 3 cutting edges is difficult and unreliable with standard calipers. These 3-point calipers allow you to get the precise dimensions of any Z=3 bit within moments once properly calibrated.
US $402.95
CAN $457.95
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Product Description

These calipers are designed to measure the dimensions of router bits with 3 cutting edges. Each is manufactured in Italy, and is accurate to within a hundredth of a millimeter. Measurements can be converted between inches and millimeters by pressing a button by the display.

Before Use

  • Before using your new calipers, take a moment to wipe rustproofing oil over the caliper using a soft cloth.
  • Remove the battery compartment lid, and insert the provided SR44 battery with the positive (+) side facing upwards.

Technical Data

  • Measuring range: 4mm-40mm (.16”-1.73”)
  • Resolution: 0.01mm (0.0005”)
  • Accuracy: ± 0.05mm (0.002”)
  • Battery Life: 1 Year of continuous usage/3 years under normal operation

Calibration Guide

  • Press and hold the “Set” and “+” buttons simultaneously, until “SET” appears on the display.
  • Turn the knob on top of the digital display and open the calipers. Insert the provided calibration gauge, and close the rear jaw onto it snugly.
  • Press the "+" button until the display reads "4.00"
  • Press the “Set” button again- your instrument will now zero out to “4.00” whenever the “SET” button is pressed This is the correct minimum distance when the calipers are fully closed.
  • Now the minimum dimension has been correctly set- before doing each measurement, be sure to move the calipers into the fully closed position and press “SET” for an accurate reading.

  • Using the calibration gauge to set the correct zero point

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