Choosing a digital caliper for dimensional metrology machine inspection usually comes down to one practical question: does the tool reach the parts you actually measure? In this head-to-head, two new Mitutoyo digital calipers answer that question differently. The 500-193-30 offers more travel, while the 500-172-30 is built around a shorter format. The longer-range model also carries the lower listed price, so the decision is not just about range.
Quick verdict
Choose the 500-193-30 when you need more measuring travel and want to keep the price down. Choose the 500-172-30 when your inspection routine is set up around shorter workpieces. Both are Mitutoyo digital calipers, so the difference is in travel, price, and which one matches your bench.
Side-by-side comparison
| Product | Listed Price | Capacity | Standout Specification |
|---|---|---|---|
| Japan Mitutoyo 500-193-30 300mm/12" Digital Digimatic Vernier Caliper | USD 80.00 | 12 in max | IP54, 0.0005 in resolution, SPC output |
| MITUTOYO Digital Caliper, 500-172-30 8"/200MM AOS ABS with Output | USD 153.30 | 8 in / 200 mm | AOS ABS with Output in model name |
Where each product wins
- The 500-193-30 wins on reach and budget. It lists the longer maximum measurement and the lower of the two prices.
- The 500-172-30 wins when you want the shorter-range format. The model name points to AOS ABS with Output, and the shorter capacity fits a bench dedicated to smaller parts.
Product notes
Japan Mitutoyo 500-193-30 300mm/12" Digital Digimatic Vernier Caliper US 100
This is the caliper to pick when parts approach or exceed 200 mm. It is priced at $80.00, the lower price in this pair, and its listed capacity reaches 12 inches. The specification sheet includes IP54 dust and splash protection, a 0.0005-inch resolution, and SPC output, so it is ready for close machine-inspection work. The listing also says the package includes a protective storage case, instruction manual, and inspection certificate. The tool measures inside, outside, depth, and step dimensions, which means one caliper covers most inspection checks. The trade-off is extra travel: if your parts are consistently smaller than 8 inches, much of that 12-inch range goes unused. For a shop that measures larger fixtures, the extra reach and lower listed price make this the stronger buy.
MITUTOYO Digital Caliper, 500-172-30 8"/200MM AOS ABS with Output
This is the shorter-range choice. Its model name calls out an 8-inch/200 mm capacity and AOS ABS with Output, so it fits a bench organized around 200 mm workpieces. The listed price is $153.30, which is $73.30 above the 12-inch model. That price difference is significant when you look at the travel: you are paying more for less range. The main limitation is capacity: at 8 inches, it cannot reach the larger parts that the 500-193-30 can. If your parts never exceed 200 mm, that shorter travel is not a drawback. If they do, you would be paying more for a tool that runs out of range sooner.
Final choice by use case
Match the tool to the largest part you regularly inspect. If that part is within the shorter model's listed capacity, choose the 500-172-30. If it is not, choose the 500-193-30. For shops that mix part sizes, the 500-193-30 gives you more usable range and a lower listed price, making it the safer default.
