Mikrometer-Ratschen-Kraftmessgerät (5–12 N) – Vintage Micrometer Ratchet Force Tester Set

A specialized vintage set for collectors and enthusiasts of precision measuring instruments: a Mikrometer-Ratschen-Kraftmessgerät (5–12 N).

According to the supplied product information, this is a measuring-force tester (Messkraft-Prüfvorrichtung) for the ratchet or friction thimble of outside micrometers, with a stated measuring-force range of 5–12 N.

The modular set consists of a central test head and two metal sleeves. The components bear metric and imperial markings: 0–25 mm (0–1 inch), 25–50 mm (1–2 inches), 50–75 mm (2–3 inches), and 75–100 mm (3–4 inches). The central head features a small readout window.

The set comes in the pictured light-colored wooden storage case with protective foam lining. Its understated presentation and specialist construction make it an interesting addition to a collection of vintage metrology instruments.

According to the seller, this is an unused New Old Stock (NOS) set of German origin. The manufacturer has not been established, and no affiliation with a particular brand is claimed. Please examine the photographs for the appearance and external condition.

The supplied information describes its use for checking outside micrometer measuring force in relation to DIN 863. Current calibration, measurement accuracy, and compliance with the standard have not been verified and are not guaranteed.

Weight of the complete set, including the wooden case: 308 g.
Overall dimensions of the closed case: 24 × 6.5 × 3 cm.
These measurements exclude shipping packaging.

Only one example of this set is available. Shipping with tracking is charged separately.