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Roy Meyer and team

Genuine Mitutoyo Dial Caliper

Your best choice in dial calipers at the best prices available

The workmanship of this Brazilian made Mitutoyo dial caliper is clean and refined. It has the much sought after thumb roller which gives you great control in opening and closing the jaws. The sides of the beam have been coated with titanium. This means that there won't be any play—and errors—because of heavy use. It also gives them a nice and smooth slide. The dial numbers are very large and readable on a bright white face, without any annoying and misleading subdivisions.

Take note that, because of their low price, repairs will not be economical. Treat these (especially the 4" and 6" models) as "throw-aways" when the time comes. If you just need to replace a crystal or other simple part, you can always buy parts online. This is one of the reasons we recommend the Mitutoyo dial calipers: parts will be available (theoretically from any Mitutoyo distributor, if you ask nicely) except possibly for the oldest (obsolete) models, and that's understandable.

To use the calipers for depth measurement, add a T-Bar depth base attachment as shown on page 203.

  • resolution .001"
  • accuracy: ±.001" per 6"
  • hard plastic case for safe storage
  • thumb roller for great control
  • coated beam for long life
  • detailed instructions included in multiple languages
  • manufacturer's calibration certificate
  • 1-year warranty
  • made in Brazil
  • plastic crystal in a metal bezel can be bought assembled for easy replacement

We all know by now that you will find the best prices on Amazon. We want you to make certain that you buy the genuine Mitutoyo calipers, not one of the Chinese Mitutoyo imitations currently flooding the market.

Be wary of buying so-called Mitutoyo from anyone other than an authorized Mitutoyo distributor!

By clicking the links shown below you will be able to buy these calipers directly from Mitutoyo and not from a third-party. It is the best way to avoid getting ripped off and you will be saving 25% to 32% off list price.

Check it out and don't hesitate to place an order. You will not be buying from us because we can no longer compete with these cost-saving prices. Still, we will be making a few pennies by having referred you to Mitutoyo at and, thank you!


Genuine Mitutoyo 6" model 505-742 has the standard white dial.


Some models have carbide jaws for wear resistance

Range New Mitutoyo Model Old Model Dial Color Sale Price US$
6" 505-742 505-675 white check price and stock
6" 505-742-51 505-675-51 blue check price and stock
6" 505-742-52 505-675-52 purple check price and stock
6" 505-742-53 505-675-53 green check price and stock
6" 505-742-54 505-675-54 red check price and stock
6" 505-742-55 505-675-55 orange check price and stock
6" 505-742-56 505-675-56 black check price and stock
6" 505-736 white with carbide OD jaws check price and stock
6" 505-738 white with carbide OD and ID jaws check price and stock
8" 505-743 505-676 and 505-644-50 white check price and stock
12" 505-746 505-677 and 505-645-50 white check price and stock

Q&A about Mitutoyo calipers

Q: I own a Mitutoyo dial caliper, code number 505-675. It can read to the nearest thousandth of an inch, supposedly, so I could measure a distance, for example: 1.253". However, there is also a scale on the blade for mm. Is this mm scale just there so I can know "approximately" the distance in mm? Am I missing something?

  • You are not missing something, you have in fact noticed something which most people miss. We have to assume that Mitutoyo uses the same beam for both inch and metric calipers during assembly. The dial readings would make the difference.

Q: The hand no longer returns to zero. Can I make an adjustment?

  • On the older Mitutoyo models you had a copper "key" designed to fit into a hole in the side of the body so that you could reset the hand. In these new models, that feature is no longer available. If the hand is way off zero and you can't live with it, it means the gears have jumped a tooth and you'll have to send it to a shop for servicing. (We no longer repair dial calipers, so we won't be able to help you.)

Q: I gather from your site that you could also repair my old Mitutoyo dial caliper. Is that true and/or is it probably even worth considering doing?

  • Actually, we no longer repair calipers particularly in light of the rock bottom sales prices. They just aren’t worth while. One of the issues easily overlooked is the condition of the measuring jaws. Even if we get the movement back in shape, we find the calipers are just barely accurate. Mitutoyo uses a nice and hard steel so they last pretty well but it doesn’t take much to get an error of over .001” when you think about it. Those jaws could be ground and lapped but the labor cost would never be justified. We used to charge $90 to repair a caliper. You see what I mean?

Q: Which screws should I order for the slider stop? I need to replace the slider stop, the black plastic piece at the end of the caliper beam. It fell out and I lost it.

  • Slider stops do not use screws. The plastic stop has two pegs which fit into the holes that look like they would be for screws. This is the reason the slider stop fell out in the first place.

Q: I need a thumb roller hook for a Mitutoyo caliper model 500-351.Your parts list shows that I need thumb roller hook 145120 that is discontinued without replacement. The parts list also shows thumb roller hook P/N 141941. Will this work or am I screwed?

  • The different thumb rollers are not interchangeable due to some subtle size differences. Unfortunately the designers at Mitutoyo never take this into consideration when they come up with model changes. You are screwed.

Q: I have an old model Mitutoyo caliper and I'm not sure if I can use the dial from a new model. Will this cause problems?

  • You can use a new dial, assuming it is the same diameter and has the same numerical configuration, but if someone down the line tries to order parts they may inadvertently think they have the wrong model number. If you change out a dial, be sure to write the correct model number somewhere conspicuous on the calipers to avoid problems.

Q: Do Mitutoyo calipers get oiled when reassembled?

  • There is no oil in the movement at all. The beams are often coated with a thin film of oil just to keep them corrosion free. It is best to remove the oil on the beam, if you notice any, with a cloth and a bit of alcohol. Do not allow any liquids to enter the movement.


Caution if buying from Amazon: their product images sometimes do not match the product description. Read carefully!

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