The Best Digital Calipers
Verified by
Ryan V. Editor-in-Chief
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Four of the buying guides in our research put the Mitutoyo 500-196 at the top of their lists: The Consumers Guide, Machinist Guides, Microcontrollers Lab and DIY Garden, where Harry Duncton rated its build quality second to none. GoodPrints3D named it the premium choice for 3D printing benches. The forums back that up. In a Garage Journal thread on choosing a digital caliper, about 15 posters recommended Mitutoyo, far more than any other brand, and roughly eight ToolGuyd readers said the same in a 66-comment discussion.
The encoder explains most of it. Mitutoyo's ABSOLUTE induction scale knows where the jaws are the moment you switch it on, so switching it off between parts never costs you your origin, and you don't re-zero every time you pick it up. It reads to 0.0005 in and holds ±0.001 in across the full 6 inches. Mitutoyo rates its single SR44 cell at about five years of normal use, and ToolGuyd readers described Mitutoyos from the 1990s that still work.
Then there's the feel. ToolGuyd commenters called the slide the smoothest and most consistent they had used. Model Engineer forum members who checked cheap calipers against their Mitutoyos found the readings close, with the mechanical feel as the clear difference. Bob Vila's Tom Scalisi and James Fitzgerald tested Mitutoyo's coolant-proof IP67 sibling and "immediately felt the difference in build quality and materials."
Buy it from an authorized Mitutoyo distributor. Amazon's US search results for this model are crowded with lookalikes sold under misspelled brand names, so we link to Mitutoyo directly. GlobalTestSupply lists a regular price of $202.
What It Won't Do
It has no IP rating. Mitutoyo lists none for the 500-196-32, so coolant, cutting fluid and wet benches are a real risk, and The Consumers Guide named the missing rating as its main weakness. Sealed protection means stepping up to Mitutoyo's pricier IP67 Coolant Proof line. This model also skips the data port and the fractional readout that $25 calipers include. Counterfeits are common enough that DIY Garden warned readers about them, so treat a suspiciously cheap Mitutoyo as a fake until proven otherwise.
The iGaging Absolute Origin gives you the feature that makes the Mitutoyo special, a scale that remembers its zero when switched off, for roughly a third of the price. Microcontrollers Lab named it Best Value. GoodPrints3D called it the best all-around caliper for most 3D printing benches, and The Consumers Guide listed it as its "also great" pick behind the Mitutoyo.
Hobby machinists rate it highly too. About seven ToolGuyd readers recommended it, and a Garage Journal poster called iGaging almost as good as Mitutoyo. Bob Vila's testers made the 8-inch version their Upgrade Pick after measuring leather, angle iron, wood and machined photo-tube extensions with it.
It also beats the Mitutoyo on two specs. The body carries an IP54 rating against dust and splashes, and an SPC/USB port lets you send readings to a computer with iGaging's cable. Resolution matches at 0.0005 in, with a stated accuracy of 0.001 in.
What It Won't Do
The slide is not as smooth as a Mitutoyo's, a gap Microcontrollers Lab pointed out, and the readout is on the small side: Bob Vila's testers called the 8-inch model's screen "a little small" and its digits "semi-easy" to read. iGaging publishes no battery life for the CR2032 cell. The 6-inch 100-700-06 reads inches and millimeters only, so woodworkers who want fractions need the 100-700-33. The USB cable for the data port is sold separately.
Who Should Buy Which
Mitutoyo 500-196-32 ABSOLUTE Digimatic
The top pick in four of the buying guides we analyzed, with an absolute scale that holds its zero and a battery rated for about five years
- You machine metal parts and need readings you can trust to a thousandth
- You want a caliper that holds its zero every time you switch it off
- You'd rather change a battery every few years than every few months
- You plan to keep one caliper for decades
- You can buy from an authorized Mitutoyo distributor
iGaging Absolute Origin 6-Inch
An absolute-scale caliper with IP54 sealing and a data port, for roughly a third of the Mitutoyo's price
- You 3D print, build electronics or do hobby machining
- You want an absolute scale without paying Mitutoyo prices
- You work around dust or splashes and want IP54 protection
- You want to log readings to a computer
- You're buying your first good caliper