Closed black wooden case with oval Carl Mahr Esslingen a.N. maker's logo

Carl Mahr Esslingen Nr. 40 SF Indicating Micrometer in Wooden Case

€750,00 EUR
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Closed black wooden case with oval Carl Mahr Esslingen a.N. maker's logo
  • Closed black wooden case with oval Carl Mahr Esslingen a.N. maker's logo
  • Close-up of the oval Carl Mahr Esslingen a.N. maker's logo on the wooden case
  • Carl Mahr Nr. 40 SF indicating micrometer in its open wooden case with factory diagram inside the lid
  • Front view of the Carl Mahr Nr. 40 SF indicating micrometer with graduated thimble and mechanical indicator
  • Close-up of the Carl Mahr micrometer indicator marked 1 Strich = 2µ, showing the 2-micron scale divisions
  • Rear view of the Carl Mahr Nr. 40 SF micrometer showing the textured black finish and visible wear
  • Closed black wooden case with oval Carl Mahr Esslingen a.N. maker's logo
  • Close-up of the oval Carl Mahr Esslingen a.N. maker's logo on the wooden case
  • Carl Mahr Nr. 40 SF indicating micrometer in its open wooden case with factory diagram inside the lid
  • Front view of the Carl Mahr Nr. 40 SF indicating micrometer with graduated thimble and mechanical indicator
  • Close-up of the Carl Mahr micrometer indicator marked 1 Strich = 2µ, showing the 2-micron scale divisions
  • Rear view of the Carl Mahr Nr. 40 SF micrometer showing the textured black finish and visible wear
Carl Mahr Esslingen Nr. 40 SF Indicating Micrometer in Wooden Case

Carl Mahr Esslingen Nr. 40 SF Indicating Micrometer in Wooden Case

€750,00 EUR
A distinctive piece of analog precision engineering: the Carl Mahr Esslingen a.N. Fühlhebel-Schraublehre Nr. 40 SF. This indicating micrometer combines a graduated micrometer thimble with a mechanical pointer in a separate indicator window. An appealing collectible for enthusiasts of historic measuring instruments, precision mechanics, and horological technology. PRECISION DETAILS The indicator is marked “1 Strich = 2µ,” meaning each scale division represents 2 micrometers. This describes the scale graduations, not the instrument’s current accuracy or calibration. The knurled thimble, metal measuring faces, and textured black finish give the instrument its distinctive technical appearance. The seller estimates that the instrument dates from the 1950s–1960s. This dating has not been independently confirmed. WOODEN CASE Supplied in a black-painted wooden case described by the seller as original, with metal clasps. Inside the lid is a factory label featuring a technical drawing, the model designation, and the oval Carl Mahr Esslingen a.N. logo. The oval maker’s logo also appears on the outside of the case. CONDITION AND DETAILS Vintage, used condition with visible signs of use and age on both the instrument and the case. The black finish has a pronounced crackled texture and localized wear. Please examine the photographs carefully for the finish, indicator window, and condition of the case. Operation and measuring accuracy have not been confirmed. No calibration guarantee is provided. Brand: Carl Mahr Esslingen a.N. Model: Fühlhebel-Schraublehre Nr. 40 SF Type: Indicating micrometer Scale marking: 1 Strich = 2µ Stated weight: 554 grams Stated dimensions: 17 × 9 × 3 cm Includes the accompanying wooden case Only one example of this product is available. Tracked shipping is charged separately.

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