Electronic Digital Calipers

Electronic Digital CaliperElectronic Digital Calipers have been used by engineers for many years.

For those who are contemplating purchasing one for the first time or are having problems using them this is a short guide to explain the usage of it.



The image above has the main operating components labeled and they are the following:

  • Internal measuring jaws.
  • Measurement display.
  • Depth probe.
  • Thumb screw.
  • Thumb locking screw.
  • External measuring jaws


First ensure the external jaws are clean and are completely free of dust or any other foreign body..
Then close the jaws and switch the caliper off and on and the measurement readout should be zero.

To take an external measurement, open the caliper and then close the caliper on the object being measured.

.The caliper jaws should be at right angles to the object.

To make inside measurement close the jaws and insert them into the object and open them keeping the jaws at right angles to the surfaces being measured..
To take a depth measurement close the jaws and set the non moving end of the caliper on the top of the object..

Then move the movable part so that the depth probe extends out to the depth of the object.

Ensuring in all cases that the caliper is at right angles to the measured object..
There is a thumb screw on top of the caliper above the measurement readout display.

This when tightened locks the sliding part of the caliper which allows a measurement to be taken and held.

This permits a measurement to be take and locked if it is in a position that the readout cannot be seen until the caliper is moved.

Under the readout there is a switch the can change the readout from inches to decimal..

This is a correct transformation from one measurement to another.


There are several videos on You Tube showing these operations.

Please note:
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Follows is 5 of the best Electronic Digital Calipers:


Neiko 01407A Electronic Digital Caliper with Extra Large LCD Screen | 0 – 6 Inches | Inch/Fractions/Millimeter Conversion

  • This unit has the unique readout mode, it can display in inches, decimal and fractions.
  • The accuracy of the caliper is 0.001”/0.02mm.
  • It can measure from 0-6”/ 0-150mm.
  • The unit is made of finely polished steel.
  • A thumb roller/locking screw ensures a smooth transition of the measuring operation.
  • Is supplied with a custom made storage case with a replacement battery.
  • The LCD readout has extra large screen to provide easy reading.

This caliper has a very mixed bag of reviews and so it appears that it is possible to get a very good product.

If however it is in the other end of the spectrum just get it changed.


See the latest price of Neiko 01407A Electronic Digital Caliper here...



Digital Caliper, Water Resistant, Fractions, 6″/150mm, Durable Stainless Steel IP54 Electronic Measuring Tool by EAGems, Purchase Your Calipers Now for Quick Precision Measurements

  • The fixed arm made from hardened stainless steel, with no plastic protected against water splashes gives a smooth operation.
  • Large easy to read LCD screen.
  • A second battery with a low battery warning.
  • Measurement between 0/6”/150mm.
  • Accuracy of 0.0005”/0.01mm.
  • A 2 year warranty for complete customer satisfaction.

There were a number who were critical of the product as it needed to be recalibrate quite often.

The top star reviews are very delighted with the calipers.


See the latest price of Digital Caliper, Water Resistant here…



iGaging ABSOLUTE ORIGIN 0-6″ Digital Electronic Caliper – IP54 Protection / Extreme Accuracy

  • Measures from 0-6”/150mm.
  • Accurate 0.001”/0.02mm.
  • Dust and water drop resistant to IP54 protection standard.
  • Has computer connection available: USB option extra.
  • ISO manufacturing standard certified: DIN Standard 862.
  • Provides a 2 year warranty.

There was an independent review of 6 Calipers and this was rated very high and for the price was very close to one of the very expensive callipers that were exceedingly good and accurate.

However reading some of the reviews there seems to be a relaxation on quality control.


See the latest price of iGaging ABSOLUTE ORIGIN here…



Dr.Meter 6″ Digital Caliper Stainless Steel Venire Caliper Gauge Micrometer with Electronic Large LCD Display Inch Decimal Millimeter Auto off Measuring tool,Black

  • Has a measurement range 0-6inches.
  • Has an accuracy 0.001”.
  • With no slop between the the sliding measurement body and the fixed ruling arm gives the ability of high accuracy.
  • With a large screen readout gives a huge digital display.
  • The stainless steel body is very well polished to give a smooth operation and accurate positioning.
  • A 5 minute shut off feature to maximise battery life when not in use.
  • To obtain stepped readings when the jaws are open there is a zero function on the readout.

The reviews for this product are very good and surprislngly very few critical reviews.


See the latest price Dr.Meter 6″ Digital Caliper here…



Digital Caliper – Stainless Steel – Large LCD Screen – FREE Feeler Gauge Included – & Extreme Accuracy – Inch/Metric Conversion

  • Measuring range from 0-6”/0-150mm.
  • With an accuracy of 0.0015”/0.03mm.
  • The main body of the unit is hardened stainless steel.
  • No parts are made of plastic.
  • The Green Tools company back the unit with 100% money-back guarantee if the Digital Caliper is not up to your satisfaction.
  • As a free bonus they include a 26 hardened and tempered feeler gauge steel blades measuring from 0.0015/0.025 inches.

This product has a very good high review rating and there was only one criticism review and that appeared to be a defective product and with the 100% guarantee I would expect that to be rectified.


See the latest price of Digital Caliper – Stainless Steel here…



Recommendation of Electronic Digital Calipers

Of the 5 Electronic Digital Calipers reviewed there are 2 that are on level terms for performance and accuracy.

They are the following:

Digital Caliper – Stainless Steel – Large LCD Screen – FREE Feeler Gauge Included – & Extreme Accuracy – Inch/Metric Conversion


Dr.Meter 6″ Digital Caliper Stainless Steel Venire Caliper Gauge Micrometer with Electronic Large LCD Display Inch Decimal Millimeter Auto off Measuring tool,Black

The price difference was not the deciding factor as they were in the mid range the cheapest was reflected in its poor review results, this does show that it is necessary to pay that little extra for quality.