How to Use Dial Height Gauges

Machinists often use dial height gauges for measuring parts.

In order to measure parts that are made in a machine shop environment, you must use an easy-to-read precision measuring tool specifically made for this application. A dial height gauge is good for measuring hard-to-handle parts, as you can set them down to get an accurate reading. As long as the parts are clean and the surfaces you are working with are clean as well, your measurements will be as accurate with a measuring device like this as with any type.

Things You'll Need

• Acetone
• Cleaning cloth

Instructions

1. Clean off the surface where you will place the base of the dial height gauge. Wipe the surface with a dry cloth first to remove dust, then place acetone on the surface or directly on the cloth and wipe the area once again. If the dial height gauge is sitting on debris or a non-flat surface, your readings will not be accurate.

2. Clean the slide off in the same manner with acetone and a clean soft rag. This will allow the height dial to accurately read the measurement, as the dial number will increase as the jaw is lifted upwards. If there is debris on the slide, you may get a false reading. The dial contains a device that reads the height as it moves up the measuring slide.

3. Clean the bottom of the measuring jaw. This is the surface that will touch the object you are attempting to measure with the dial height gauge. If there is a buildup of shop debris on the measuring surface, your reading will be off. Wipe with acetone and a clean, soft cloth to remove any gunk or dirt.

4. Slide the measuring jaw all the way down to the surface of where the base is located. This is the zero point for the height measurements you will make on this surface. Make sure the jaw is completely touching the surface and reset the zero point on the dial. Unlock the bezel and turn the dial until the indicator is touching zero.

5. Lift the measuring jaw up and place the object you will measure underneath it and slowly lower the jaw to the top point of the area you wish to measure. Make sure the part or object is clean before attempting to measure; any buildup of debris, dirt or fluid can alter the measurement enough to cause false height measurement readings.

References

• Tresna: Height Gauges Information