Author Options:

Digital or Analog Micrometer? Answered

I've been looking into buying a micrometer, but having never owned (or for that matter, touched) a micrometer before, I am unsure of whether a digital or an analog one would be better. By better, I mean accurate, consistent, etc. Has anyone had any experience in buy a micrometer? Any help would be appreciated. Thanks!


I prefer, personally, a digital with a good spike preventative circuit (for those of us that forget to move the dial out of the 1 ohm resistance test area to the 22o vAC setting *blush*). I used mine a lot though, and needed capacitance, transistor, and inductance testing on mine.

Yeah, I have to stop posting here late at night. I get all blurry-eyed and such....sorry about that.

. I figured you just forgot to put your glasses on. heehee . I had to start wearing reading glasses a few years back and was always having to look for the things. Called the optometrist, found out what my prescription was, and went shopping. Evidently, I'm not the only one with the problem - they sell the things in six-packs. LOL

forgot my glasses....that reminds me of a little song....

Oh wait, that was early in the morning....well, same thing for me.


10 years ago

Most of the machinists I know have always preferred analog micrometers for accuracy and durability. Having said that, I've been using the same Mitutoyo digital micrometer daily for fifteen years and I wouldn't buy anything else.

Accuracy of a micrometer is all in you hands (you can and should of course have it calibrated yearly) but that said it is truly in your hands how accurate you are with a mic. Having to deal with the issue every single day at work I know that you can get a mic to give you a reading that you want weather it is accurate or not... So depending on your needs ie. what your measuring, how often you are measuring, how accurate you need to be (At work we measure 3 decimal places for everything and sometimes 4) I would suggest digital though simply because they are very easy to read and having never dealt with a mic before it can be tricky. Also you could get a quasi-digital (I'm sorry I cannot think of the word right now, just think of the old clocks with the flip numbers) mic. Good pair of digital calipers can be picked up for roughly $25usd but expect to pay upwards of $100 for a good 0"-1" OD Digital Mic. Hope I helped Judge Kaos PS check out your local Pawn Shops for some deals perhaps.

. Depends on how often you plan to use it and what you plan to use it for. . I prefer an analog unit, mainly because I don't use one often and don't want to have to worry about whether or not the battery is still hot. . If you are going to be making a lot of measurements, a digital is a lot faster. But I don't take a lot of measurements at one sitting, so I've always bought analogs. . Don't buy the cheapest unit you can find (unless you can find a real good deal on a quality unit), but you probably don't need a top-of-the-line (eg, Starrett), either. . Get a case. With proper care, a good mic will last a lifetime. . . All that said, a dial caliper may be a better choice - depends on what you're gonna do with it. I like analog ones for the same reasons. . . You may want to get a dial indicator with magnetic base, while you're buying tools.