Description
Condition
Used (Working Order).
This large-capacity caliper is in used condition with cosmetic signs of workshop service, but it is mechanically sound and functions perfectly. The sliding action is smooth, and when the jaws are closed, there is no light gap visible between the measuring faces.
Notes:
- Zero Setting: Like all dial calipers, the needle resting position can vary; however, the bezel is fully rotatable, allowing you to instantly set the zero point to wherever the needle rests. This is a standard feature, and the tool calibrates 100% accurately.
- Cosmetic: There is a small screw missing from the rear cover, which has no effect on the tool’s rigidity or function.
Product Overview
The Mitutoyo 537-507 is a unique “Hybrid” instrument, often referred to as a Dial Caliper with Mechanical Digit Counter. Unlike standard dial calipers where you must count the millimetres on the main beam (which can be prone to reading errors), this model features a mechanical odometer-style counter that displays the millimetre reading clearly in a window.
The dial then provides the fine resolution of 0.02mm, making it exceptionally fast and easy to read—combining the distinct “at-a-glance” readability of a digital caliper with the battery-free reliability of a mechanical tool. With a massive 450mm (18″) measuring range, it is ideal for heavy machining and fabrication tasks where standard 300mm calipers fall short. It features a dual-beam construction for rigidity and standard outside/inside jaws.
Brand Information
Mitutoyo Corporation (est. 1934) is the global leader in precision measurement. The Series 537 “Digit Counter” calipers were a significant innovation, bridging the gap between vernier and digital tools. They are prized by machinists for their robust “no-nonsense” design—if you drop it, you might break the crystal, but you won’t kill the electronics, because there aren’t any.
Specifications
| Feature | Specification |
| Model | 537-507 (Series 537) |
| Range | 0 – 450mm (18″) |
| Graduation (Dial) | 0.02mm |
| Readout Type | Mechanical Digit Counter + Dial |
| Material | Hardened Stainless Steel |
| Jaw Type | Standard OD & ID Jaws |
| Condition | Used (Fully Functional) |
Keywords
Mitutoyo, 537-507, digit dial caliper, mechanical digital caliper, 450mm caliper, 18 inch caliper, dial caliper with counter, heavy duty caliper, machinist tools, vintage tools.
