Mitutoyo 530-312 Vernier Caliper 0-6 in Stainless Steel

Product Description

The MITUTOYO 530-312 is a stainless steel vernier caliper designed for precise manual measurement in trade, industrial, and inspection applications. It covers a measurement range of 0 to 6 inches (0 to 150 mm) with a graduation of 0.001 inches (0.02 mm) and an accuracy of 0.03 mm. The caliper handles four measurement types in a single tool: outside, inside, depth, and step measurements. The beam and jaws are constructed from stainless steel with a satin chrome finish, providing corrosion resistance and long service life. A single set screw secures the sliding jaw during readings. The tool ships with a holster for storage and protection.

The 530-312 suits precision measurement tasks in HVAC, plumbing, electrical, and general mechanical trades where part dimensions must be verified before installation or fabrication. It is well suited for measuring pipe OD and ID, fitting dimensions, conduit sizing, and component clearances. The 1.5748-inch (40 mm) jaw depth allows access to recessed features and stepped surfaces. Inside diameter jaws and a depth measurement rod are included, making this a complete general-purpose measuring instrument for shop and field use.

Key Features

• Measurement range: 0 to 6 inches (0 to 150 mm)
• Graduation of 0.001 inches (0.02 mm) for fine resolution readings
• Accuracy of 0.03 mm across the full range
• Four measurement modes: outside, inside, depth, and step
• Stainless steel beam and jaws with satin chrome finish for corrosion resistance
• Includes inside diameter jaws, depth measurement rod, and protective holster
• Series 530 sliding jaw design with single set screw lock

Compatibility

Designed as a general-purpose vernier caliper suitable for dimensional inspection and measurement tasks across mechanical, HVAC, plumbing, and electrical trade applications.

Installation Notes

Vernier calipers require no installation but should be inspected for zero error before use by closing the jaws fully and confirming the vernier zero line aligns with the main scale zero. Keep the sliding surfaces clean and lightly oiled to maintain smooth jaw movement and measurement accuracy. Store in the included holster when not in use to protect the graduated surfaces and jaw faces from damage.