12-20mm Three-Point Inside Micrometer Self-Centering, 0.005mm Resolution, Supplied in Case - Metav IndustryLine

High-precision, self‑centring three‑point contact and carbide measuring faces combine to deliver repeatable internal measurements for small bores; order directly via Metav Werkzeuge or contact our technical advisers for application support.

Three‑point internal micrometer M836.740 — 12–20 mm range, 0.005 mm accuracy (Metav IndustryLine)

The Three‑point internal micrometer M836.740 is an analogue instrument for precision internal diameter measurement, conceived for fine mechanical work, toolmaking and quality inspection of small bores

• Self‑centring three‑point contact
• Measuring range 12–20 mm
• Accuracy 0.005 mm
• Carbide measuring faces

Repeatable internal measurement with minimal operator influence

The self‑centring, three‑point contact mechanism ensures the measurement datum forms automatically around the bore, so alignment errors are reduced and results become reproducible across operators. With a mechanical resolution of 0.005 mm and a stated accuracy of 0.005 mm, the instrument is optimised for tasks where small deviations matter, such as finished bores, bearing seats and precision assemblies. The analogue design keeps operation straightforward while the thimble and setting ring permit fine, tactile control over the measuring procedure.

Durable contact surfaces and sustained metrological stability

The hardened, carbide measuring faces resist wear that otherwise alters contact geometry and measurement reliability over time. This wear resistance means less frequent re‑grinding of faces and a more consistent uncertainty budget in routine inspection. The instrument’s analogue readout avoids electronic drift and is ideal where simple, robust inspection is preferred; the design suits both bench inspection and use near the machine where durability and immediate results are paramount.

Practical set configuration for workshop workflows

Delivered as a two‑piece set with extension capability, the configuration accommodates shallow and moderately deep bores while remaining compact for bench storage. The included setting ring (size 16) enables quick zero checks and keeps the measurement chain verifiable during production runs. Integration into quality routines is straightforward: the instrument supports frequent spot checks, incoming‑inspection sampling and validation of reamed or honed bores, reducing downtime by catching deviations early. Backed by Metav’s range and service ethos, the tool is a practical choice for workshops seeking affordable, dependable precision.

Contact Metav Werkzeuge in Emmerich for tailored technical advice or a quotation on the Metav IndustryLine three‑point internal micrometer M836.740 — phone +49 2822 7131930 or email info@metav-werkzeuge.com

Technical data

• Article number: M836.740
• GTIN: 4061905041211
• Manufacturer: Metav IndustryLine

Numbers / Core technical data

• Measuring range: 12–20 mm
• Resolution: 0.005 mm
• Accuracy: 0.005 mm
• Pieces per set: 2
• Extensions: 150
• Setting ring: 16
• Type: analogue (mechanical)

Special features / Versions

• Self‑centring three‑point contact
• Carbide (HM) measuring faces
• Category: internal micrometer (three‑point)
• Analogue thimble operation
• Designed for small‑bore precision inspection

FAQ

What accuracy can be expected from this internal micrometer? The Metav IndustryLine three‑point internal micrometer M836.740 specifies an accuracy of 0.005 mm and a resolution of 0.005 mm, suitable for tight tolerance checks on small bores.

Is the instrument supplied as a single item or a set? The product is supplied as a two‑piece set, which facilitates measurement of varying bore depths and supports workshop flexibility.

What materials and applications is this instrument intended for? This internal micrometer is intended for measuring internal diameters in metal and precision components such as bearing seats, housings and machined bores in standard engineering materials.

How can measurement repeatability be maintained in daily use? Repeatability is aided by the self‑centring three‑point contact; regular zero checks with the supplied setting ring and consistent measurement technique help preserve repeatable results.

Are the measuring faces wear‑resistant? Yes, the instrument is fitted with carbide measuring faces, which provide improved wear resistance and extended stable service life compared with softer contact materials.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com