HARDELLVernier Caliper, Non Digital 6 Inch Stainless Steel Caliper Measuring Tool, Inside/Outside/Depth and Step Measurement, 0.001"/0.02mm High Precision Durable Slide Micrometer

Very good quilty. easy to read. Very happy with it

Does not operate smoothly. Jaws not perfect precision (light shows through). Fake thumbwheel. I was a diamond appraiser in one of my past lives and made extensive used of precision vernier calipers. Would be good to keep handy to make quick measurements where you wouldn't want to pull out an expensive vernier caliper. This one is fine if the price is right and you're not expecting to make highly precision measurements.

This HARDELL vernier caliper makes measuring of small objects easier and more accurate than a ruler for inside and outside measurements up to six inches and measures in mm and inches.To me this is a much needed tool and will be used a lot for whatever you may do like woodwork, mechanical or just for things around the house and so on.I do wish this caliper tool had a wheel instead of a knob but not a deal breaker for adjusting and it is rather stiff when I try to slide the ruler and binds but that should be taken care of with more use, and I will buff the edges with emery cloth which should help tremendously to make it so much smoother to operate.This vernier caliper is pretty accurate in the readings and that makes it more precise to get you down to 0.001 of an inch than a ruler or tape and does also come with a lock wheel to keep it on your measurement when finished.For the low cost if you do things where accuracy really counts then this is a very nice tool to have.

I have wanted one of these for YEARS! I actually have had a gazillion times where I needed to measure a diameter for various reasons to find a a washer or a gasket or a drain whatever so I can get the right measurement for replacement. Of course they make these digital now, but I learned how to use one of these years ago and I enjoy taking the manual measurement. If you don't know how to use just youtube it. Directions are provided, but will be confusing to some who've never used a vernier caliper before. The instrument seems well made, although for $19 I don't expect it to be 100% perfect. That said, upon first inspection of my calipers, everything was aligned and there was absolutely no gab between the closed jaws when held up to the light. To test, I measured a new US nickel and was off by .01mm. Interestingly the accuracy is specified as 0.02mm/0.001 inch, so I this is pretty darn good. The tool recommends keeping the scales oiled to ensure the markings don't scratch off with use. I could not tell if it was pre-oiled so I just used a bit of my synthetic shredder oil. The jaws are nice a sharp and the scales are easy to read. I like this very much!

The HARDELL Vernier Caliper is a solid measuring tool, particularly for its price point. As a woodworker and maker, I rely on calipers regularly and have a preference for digital or dial versions, but this classic Vernier style still holds nostalgic value. In fact, my very first caliper was a Vernier, an Italian model I still use occasionally.The robustness of Vernier calipers makes them durable and practical even today. They’re a great option for teaching kids how to measure accurately and, unlike digital calipers, they don't require batteries. The HARDELL Vernier is accurate, well-built, and easy to operate—moving the jaw smoothly without any noticeable slack.However, the thumb screw for locking the jaw isn’t perfectly perpendicular to the bar, which is a minor flaw, but at under $20, it’s hard to complain. For a first-time caliper buyer, I’d recommend going with a digital model for easier reading, especially at a comparable or lower price. Still, this Vernier shines in situations where you'd need a more resilient tool, such as in wet or oily environments, or if you're looking for a tool to teach someone the classic way of measuring. Overall, it's a decent choice with a few minor drawbacks.

There is a lot to like about this set of calipers. The fit and finish is OK, no sharp edges/corners and the markings are uniform and clean. The jaws are parallel and smooth and the slide moves easily. The metric scales are accurate and measurements made with these scales are correct.The imperial or inch vernier is a different story, however. Since there are extra marks on the main scale, it can get a little confusing when trying to figure out which marks are aligned. To complicate matters even more, the inch vernier scale on my unit is NOT engraved properly. To help you understand what I am talking about, I will give a little theory about how vernier scales work. The main scale on the inch part of the calipers is marked every 0.025 inch and we want to divide each of these divisions into 25 equal parts, each one of which is equal to 0.001 inch. For a vernier scale to work correctly, only one mark on the vernier can be aligned with a mark on the main scale. The only exception to this rule is when the 0 is aligned the 25 should also be aligned. I have included a close-up picture of my calipers showing the 0 marks aligned and the 15 is aligned and the 25 is between marks. Which mark should the 25 be aligned with? It should be aligned with the 1.225 mark. If you count all the 0.025 marks from 0 to 1.225 you should get 49 marks. Since each mark on the inch vernier represents two 0.025 marks we have a total of 50 marks on the vernier. Remember, we are trying to divide each 0.025 division by 25. Compare this to the metric scales. Each mark on the main scale is 1 mm. We want to divide each 1 mm division into 50 pieces each 0.02 mm long. So, if we divide the distance from 0 to 49 mm into 50 divisions, each division will be 0.98 mm long. 50 times 0.98 mm equals 49 mm. The first mark to the right of the zero on the metric vernier scale has to be moved 0.02 mm to the right to align with the 1 mm mark on the main scale. If you check the metric scales, you will see that only one mark on the vernier scale is aligned with a mark on the main scale.I gave the calipers a 2 star rating because they are still good for making metric measurements.