IMPA: 650536

Vernier Depth Gauges for Marine Engineering and Maintenance

For demanding marine engineering tasks, a reliable depth gauge is essential for accurate measurements of holes, grooves, steps, and slot depths. The vernier depth gauge offers precise, direct readings with a stainless-steel base and rod, designed to withstand the corrosive marine environment. Whether you are in shipboard maintenance, engine-room fitting, or hull inspection, this instrument delivers consistent results that professionals trust.

Constructed from high-grade stainless steel, this vernier depth gauge features a hardened base for stability and a smoothly sliding rod with a locking screw. The clear, etched vernier scale allows for quick and easy reading, even under poor lighting conditions. With a standard range of 0–150 mm (0–6 inches) and a resolution of 0.02 mm, it meets the needs of most onboard measurement applications. The gauge comes with a protective storage case to keep it accurate and safe when not in use.

Designed specifically for the maritime industry, this depth gauge is a practical addition to any ship’s tool inventory. Its corrosion-resistant construction and portable size make it ideal for use in tough environments, from engine rooms to deck maintenance. Improve your measurement accuracy and work efficiency with this essential precision instrument.

Key Features

Technical Specifications

Range0–150 mm (0–6 inches)
Resolution0.02 mm (0.001 inch)
Accuracy±0.05 mm
Scale TypeMetric / Imperial (dual scale available)
Base Length100 mm
MaterialStainless steel, hardened measuring faces
ReadoutVernier
Included AccessoriesPlastic storage case, user manual

Frequently Asked Questions

How do I read a vernier depth gauge?

Read the main scale (in mm or inches) at the zero mark on the vernier sub-scale. Then find the line on the vernier scale that exactly aligns with a line on the main scale. Add the vernier reading to the main reading for the final measurement.

Can this gauge be used for underwater measurements?

Yes, the stainless steel construction makes it suitable for damp or wet conditions, but after exposure to saltwater, rinse the gauge with freshwater and dry it to maintain accuracy and prevent corrosion.

How do I calibrate the vernier depth gauge?

Close the rod fully against the base and ensure the vernier zero aligns with the main scale zero. If not, use the adjustment mechanism (refer to manual) or compare with a known reference standard.

Is the gauge resistant to rust?

The gauge is made of stainless steel, which offers good corrosion resistance. However, it is not marine-grade; therefore, avoid prolonged submersion and always wipe and dry after use.

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