Review on 📏 Accurate Stainless Micrometer for Precise Measurements by Aaron Leburu

Pros: * No battery * Simple, reliable design (vernier scale) * Millimeter scale is easy to read Cons: * Inch scale is less than 0.006 inch * Depth scale is about 0.4 mm short ( see photo) * millimeter scale doesn't go to zero (see photo) * inch scale difficult to read, even with reading glasses * no fine adjustment dial (expected at this price) See my recommendations at the end for something the best. I really loved this caliper because I needed a simple measuring tool with no batteries and a thin/fragile dial. I knew the scale in inches is decimal and not fractional, which many buyers don't understand. Build quality isn't exceptional, but that's to be expected given the price. My first problem was trying to read the scale in inches. I'm about 40 years old and the marks on the main scale are so small and close together that I had to use a magnifying glass to see where the marks on the sliding scale matched on the vernier method. Luckily, I had no trouble reading the millimeter scale unaided. I encountered the following problem when checking the accuracy with a vernier caliper and a digital caliper. I found this caliper to be 0.006 inches shorter, which is confirmed by both other calipers. Since both hundredths and thousandths for inches (due to the vernier method) must be obtained with some effort, including some additions, when the cut is greater than 0.25, it's unlikely I would ever measure anything with more accuracy than a tenth of one inch (0.1 inch). Regardless, I've decided to keep the caliper, mainly for millimeter use, which seems to work pretty well. A photo can show why millimeters are more accurate since the millimeter scale doesn't go all the way to zero. Perhaps this is a good way to introduce error at the other end of the scale... Then I noticed the depth gauge. When fully drowned you can see that the depth gauge pin is not level with the end of the scale (as seen in the photo). I compared the readings with a digital caliper and indeed the depth gauge read about 0.7mm too long (because the depth gauge is too short). In the end I find these issues too serious to keep and I would recommend that you avoid this product. Undoubtedly, some manufactured devices will be better than others, but if I needed decent accuracy I wouldn't risk it again by swapping out the same product - too many issues in one sample. a measuring instrument designed to make measurements with an accuracy of 0.001 when that measurement would be wrong. While I haven't found a very accurate and inexpensive caliper yet, I would recommend the following if you're looking to avoid batteries. They're very easy to read and don't require any extra time and steps to get vernier measurements: For fractions of an inch: Fox D3208 Fractional Calipers They're both at least twice the price but still a lot cheaper than the premium brands and I find them great accurate and reliable. And no batteries required.