calibrating and using digital calipers
DESCRIPTION
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Calibrating and Using Digital
Calipers
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Not sure if the digital caliper you just
purchased is giving you the right readings?
Here is how you can solve your confusion. It
is by calibrating your instrument. Measuring
calipers have been in existence for nearly
150 years now. The original design has
undergone a drastic change and has
become digital. Instruments we are familiar
with today range from digital calipers to
waterproof digital calipers. While working
on, for example, brake system of a car, it is
absolutely necessary that your caliper gives
you the right reading. As mentioned earlier
these calipers can be brought into a check
for accuracy by calibrating them. You can do
this with the help of following steps. There is
also a small paragraph on how you can
rightly use your instruments to obtain most
accurate results.
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CalibratingCleaning
One uses calipers to measure extreme degrees of precision. Some calipers available in the market are efficient enough to measure
accuracy up to one hundred thousandth of an inch. Therefore it is of high importance that the surface of an object to be measured is clean. Before taking a measurement wipe off the surface with a
clean and lint free cloth.
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Calibration Slide
There is found a locking lever for the fixed contact pad which has to be
unlocked in order to calibrate the caliper. Check for it before you buy
digital calipers, if not already bought.
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Close
Screw down the adjustment knob and close the caliper completely by
moving the portion as far possible.
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Adjust and lock
Now the movable portion of the fixed locking pad has to make a firm
contact with the movable pad portion. Put pressure against the pad
and turn the lever and lock the stationary pad in place.
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Indicator
Now that these are firmly locked in place, reset all the readout digits to
zero.
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Time to verifyThe number of calibration rods differ with different range of digital
calipers. It depends on capability of the caliper to determine the range. Digital vernier calipers or any calipers for that matter in
automotive industry generally reads zero to six inches. There can also buy digital calipers online which are small and can read up to 1
inch and have only 1 calibration rod.
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Using CalipersProper calibration can not solely help in obtaining accurate readings. It also
largely depends upon the way we use our calipers.
To use your digital caliper properly first open the caliper jaws. Then slide it over the object to be measured. Now turn the knob and close the jaws according
to the initial contact made. Remember not to over tighten the adjustment knob, only slight pressure is required. Take the reading now. You’ll be
closest to the most accurate reading.