I have a hobby machine shop and use calipers a lot. I bought a couple of digital ones over the years and soon gave up on them. I keep them around for metric measuring but I don't keep the battery in them. The issue with the cheap ones is that even when they are "off" they really aren't off. They just go into a lower power mode. But the low power mode on the cheapies is pretty bad. A battery only last a few months at best.
So I went back to my beloved dial calipers. With a little attention to keep them clean and not handle them roughly they have stayed consistently accurate to within a half thou for years now. And I don't need to buy batteries and swap them all the time.
You'll pay a bit more for a dial caliper but if you only use them occasionally and are not good at buying batteries frequently then I'd suggest you consider them over the digital style.
With a bit of searching around you should be able to find the dial style for around $30 to $35 these days.
I have a few. If you are not building the next Mars explorer they are OK. Just remove the batteries when not in use.
I just noticed that Canadian Tire has their 6" digital calipers on sale for $13.00, regularly $43.00 Not a bad deal if you need a set, April 8 to 14th
My experience as well.Been using these for several years now, never take the batteries out and still on original set. Work fine for oal, case length etc.
When the batteries do die go to your local dollar store and grab a laser pointer for two bucks and you get three batteries. Can't beat that price for batteries.
Decent but very poor on battery life regardless of any brand you put. Remove the battery after every use or you will replace it frequently. Not very accurate unless you do tool and die wherein accuracy to a 0.001 matters, it will do the job. I have one and seldom use it. I prefer the cheaper slide rule version. Dial is more accurate.
That gets you cheap china batteries. I got 50 for 2$ shipped from ebay. They actually suck and dont last.
Go to walmart and buy brand name batteries that will last a long time and work well.
I bought a second because of the sale price. My first one is great! The most recent one i bought i exchanged for another. It was .005 out on most measurements and when opening the calier for measurements it felt gritty and would only open 3" wide. The one i got in exchange was of better quality and accurate as the first.
I own a Mastercraft digital caliper and I like it. It may not be the best quality but it meets my demands. One thing I do is keep a sample round, without primer or powder, as a gauge. It came from a run of loads that fed and functioned well. It is mic'd and I use that measure to check my reloads. If I have to change dies or something, I always check against my master sample. I keep the sample round wrapped in electrical tape so I know at a glance which one it is, and never accidentally put it in with finished rounds. My 2 cents........



























