How to oil a digital caliper is a common yet often overlooked maintenance question among both professional woodworkers and DIYers. A digital caliper is a high-precision measuring instrument used to determine internal, external, depth, and step dimensions—often with an accuracy of ±0.001 inches. However, even the best digital calipers can become unreliable if not properly maintained. Prolonged storage, exposure to moisture, or fine dust can cause corrosion and impact the accuracy of its jaws and slider. To prevent surface rust and ensure long-term functionality, it’s critical to oil the measuring surfaces and guide track regularly using a light machine oil. In this step-by-step guide, we explain how to lubricate your digital caliper properly so that it remains smooth, accurate, and ready for use every time.
How To Oil A Digital Caliper
If you’ve been in the woodworking, construction, or engineering industry for quite some time, you’d agree that measurement tools need proper care to function efficiently. Compared to a dial caliper, you need to use digital ones with extra caution.
When cleaning digital calipers, you cannot use any oil that is available at the local store or your workshop. That’s because dirty oils can tamper with the accuracy of the device or, even worse, damage your caliper.
You must always go for a high-grade instrument or tool oil and use a soft cloth to apply a light coating all over your digital caliper. And dipping the caliper in oil is a big no-no, so here’s how you must lubricate your caliper using a tool or cleaning oil.
Step 1
Grab a box of clean wipes and soak them in or apply a small amount of oil over a wipe. One thing we’d like to mention is that you must choose wipes that are made out of non-woven material and boast low linting properties.
Step 2
Then rub it over the body of your digital caliper, starting from the frame and moving back and forth to loosen debris and grime. Repeat the process until the caliper and the cleaning wipes are free from impurities.
Reading Digital Or Electronic Calipers
As opposed to dial calipers, digital ones are easy to read, and that is what has contributed to their popularity.
If you’re a first-time user of electronic calipers, you’re likely to wonder– how to read digital calipers in inches. The good news is that reading measurements on digital calipers isn’t tricky, as no guesswork is needed. On the upper-right corner of the dial indicator is displayed the S.I. unit (inches or millimeters) that you set before securing it to the surface you need to measure.
Here’s what you need to know about digital calipers when measuring in inches:
- The figure on the far left of the decimal point is whole inches
- Figures on the right side of the decimal point indicate tenths, hundredths, and thousandths
How To Oil A Digital Caliper FAQs
Often, professionals and hobbyists measure the circumferences, dimensions, and other aspects with their digital calipers and toss them in their toolbox. Rarely do they clean their measuring instruments, let alone lubricate them.
So, for all those wondering how to clean digital calipers, we’ve got you covered with two tips, which, if followed, will extend their life.
- Use rubbing alcohol or solvent to wipe away impurities
- Clean dirt, grease, or oil by wiping the instrument with a clean cloth
No, you must always use a high-grade instrument oil for lubricating your digital caliper before storing it away to prevent rusting.
Conclusion
Digital calipers are one of the most useful tools for those working in carpentry, engineering, construction, or medical industries. From depth to diameter, you can measure almost everything with digital calipers, so their versatility is limitless.
However, proper care is important to take highly accurate measurements. So, make sure you apply a light coating of oil with low lint wipers to keep the digital calipers safe from rust and in good condition.
