Mitutoyo 530-312 Vernier Calipers, Stainless Steel, for Inside, Outside, Depth and Step Measurements, Metric, 0"/0mm-150mm Range, +/-0.03mm Accuracy, 0.02mm Resolution, 40mm Jaw Depth

The Mitutoyo 530-312 Vernier Caliper is a precision stainless-steel analogue caliper with a 0–150 mm range, ±0.03 mm accuracy, and a generous 40 mm jaw depth — making it the go-to choice for everyday dimensional inspection in workshops, quality labs, and field service operations. Its purely mechanical design means zero dependency on batteries or electronics, delivering reliable readings every time you pick it up.

Equipped for outside, inside, depth, and step measurements, the 530-312 combines Mitutoyo's legendary build quality with a compact, ergonomic form factor trusted by machinists and engineers across the UAE and the Middle East.

✦ Key Features

150 mm Measuring Range — The most popular caliper size, covering the vast majority of general-purpose measurement tasks in machining and inspection.

±0.03 mm Accuracy — Precision-lapped measuring faces ensure dependable dimensional verification to tight tolerances.

0.02 mm Vernier Resolution — Clearly engraved metric vernier scale allows confident reading to 0.02 mm without magnification.

40 mm Jaw Depth — Deeper jaws provide better reach and more stable contact on wider or irregularly shaped workpieces.

Stainless Steel Construction — Corrosion-resistant body with hardened measuring surfaces stands up to daily shop-floor abuse.

Four Measurement Functions — Outside, inside, depth, and step measurements from a single, compact instrument.

No Battery Required — Fully mechanical operation guarantees uninterrupted availability with zero electronic drift.

Locking Screw & Fine Adjustment — Secure slider lock and thumb roller for smooth, precise jaw positioning.

📐 Technical Specifications

🏭 Applications

CNC & Manual Machining — Quick verification of turned diameters, milled widths, slot depths, and stock dimensions during setup and production.

Quality Control & Inspection — Incoming material checks and final-part inspection with traceable Mitutoyo accuracy and repeatability.

Maintenance & MRO — A rugged, battery-free instrument always ready for field measurements during equipment repair and overhaul.

Tool & Die Making — Measure punch clearances, cavity dimensions, and die-block thicknesses with the 40 mm deep jaws.

Education & Apprenticeship — The industry-standard instrument for teaching vernier reading and fundamental measurement skills in UAE technical institutes.

🔧 Why Buy from San Tools?

Authorized Mitutoyo Supply — Genuine instruments sourced through official channels with full manufacturer warranty.

UAE-Based Stock — Ready for fast delivery across Dubai, Abu Dhabi, Sharjah, and all Emirates.

Expert Technical Support — Our metrology specialists help you choose the right caliper for your application and budget.

Competitive Pricing in AED — Transparent pricing with no hidden charges; bulk and corporate enquiries welcome.

❓ Frequently Asked Questions

Q: Is this caliper metric-only or does it also have imperial markings?
A: The 530-312 is metric-only with 0.02 mm resolution. If you need dual metric/imperial scales, consider the Mitutoyo 530-118 (200 mm) or 530-119 (300 mm).

Q: What does the 40 mm jaw depth mean in practice?
A: Jaw depth is the distance from the beam to the tip of the jaws. A 40 mm depth lets you reach further into or around workpieces, giving more stable contact on wider parts compared to standard shallow-jaw calipers.

Q: How do I maintain my vernier caliper?
A: Wipe the measuring faces with a clean, lint-free cloth after each use. Apply a thin film of light machine oil for long-term storage. Avoid dropping the instrument or using it as a scriber.

Q: Does San Tools offer calibration services?
A: Yes. We can arrange accredited third-party calibration with a traceable certificate for any Mitutoyo instrument purchased from us.