Accurate depth measurement for precision metalworking

Achieve reliable depth measurement with robust depth calipers

Depth calipers, commonly used for depth measurement and depth gauging, are precision tools designed to determine the depth of blind holes, inner grooves and similar features. These instruments use a slender measuring rod which is inserted into the recess so that the depth can be recorded to the underside of the workpiece with high repeatability.

How depth calipers work and where they belong in the workshop

Primarily constructed from stainless steel, depth calipers resist wear and deformation, ensuring stable accuracy even after prolonged use. The measuring rod is guided by a sled or rail and locked in position to read the distance from the reference face to the deepest point. They are indispensable for checking non-through holes, internal grooves and stepped recesses during machining, assembly and quality control processes.

Clear advantages that improve shopfloor efficiency

• Faster, repeatable checks thanks to a guided measuring rod and clear readout, reducing inspection time and rework.
• Wide selection of measuring ranges and leg lengths — from compact 45 mm legs up to 150 mm legs, and measurement capacities from up to 100 mm up to 300 mm, so the right tool fits each task.
• Choice of analogue or digital models: analogue calipers with vernier offer 0.03–0.08 mm accuracy and battery-free operation; digital models provide 0.01 mm / 0.0005 in resolution and typical accuracy of ±0.03 mm.
• Enhanced functionality on digital variants such as preset start, unit conversion (mm/in), automatic on‑off and models with IP67 protection for use in wet or dusty environments.
• Interchangeable measuring tips (flat, spherical, disc) and specialised hooks or double hooks for grooves increase versatility for complex geometries.

Metav as your precision partner in depth measurement

Metav combines decades of sector expertise with a broad, quality-controlled assortment, acting as a practical single source for precision tools. Based in Emmerich, Metav supplies the european market from a centralised quality filter and has built trust with over 48,000 customers. With more than 250,000 products available, Metav simplifies procurement and helps reduce supplier complexity while ensuring consistent availability.

In short: dependable tools for exact depth measurement

Depth calipers and depth measurement tools offer a straightforward, durable solution for precise depth checks across production and maintenance environments, delivering reliable readings and adaptable functionality for diverse workshop demands.

FAQ

What is the difference between analogue and digital depth calipers?
Analogue depth calipers use a vernier and typically achieve 0.03–0.08 mm accuracy without batteries, making them robust for harsh conditions. Digital depth calipers offer 0.01 mm / 0.0005 in resolution, easy unit switching and extras such as preset functions and automatic on‑off, with typical accuracy of ±0.03 mm.

Can depth calipers be used in wet or dusty environments?
Yes. Some digital depth calipers are rated IP67, providing dust-tight and temporary immersion protection so measurements remain reliable under adverse shopfloor conditions.

Which measuring range should I choose for blind hole inspection?
Select a depth caliper with a measuring range that exceeds the maximum blind hole depth you need to check; compact models suit depths up to 100 mm, while larger calipers cover ranges up to 300 mm. Also consider measuring leg length — common options include 45 mm to 150 mm — to ensure accessibility and stability during measurement.

Are there specialised tips for measuring uneven or grooved surfaces?
Yes. Depth calipers can be fitted with flat, spherical or disc‑shaped tips, and there are designs with single or double hooks or a round depth rail specifically for grooves, enabling accurate contact with irregular or recessed features.