Brown, Boveri & Cie BBC Mannheim mechanical calculating instrument with metal arms and a central sliding scale.

Brown, Boveri & Cie (BBC) Mannheim Mechanical Calculating Instrument with Case

€75,00 EUR
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Brown, Boveri & Cie BBC Mannheim mechanical calculating instrument with metal arms and a central sliding scale.
  • Brown, Boveri & Cie BBC Mannheim mechanical calculating instrument with metal arms and a central sliding scale.
  • BBC Mannheim mechanical calculating instrument in its open black storage case with green lining.
  • Closed black storage case for the Brown, Boveri & Cie BBC Mannheim mechanical calculating instrument.
  • Close-up of the D.R.G.M. marking and sliding scale on the BBC Mannheim mechanical calculating instrument.
  • Close-up of the Brown, Boveri & Cie Mannheim maker's inscription, metal guides and scale markings.
  • Rear view of the BBC mechanical calculating instrument showing the circular plate, raised fittings and Mannheim inscription.
  • Brown, Boveri & Cie BBC Mannheim mechanical calculating instrument with metal arms and a central sliding scale.
  • BBC Mannheim mechanical calculating instrument in its open black storage case with green lining.
  • Closed black storage case for the Brown, Boveri & Cie BBC Mannheim mechanical calculating instrument.
  • Close-up of the D.R.G.M. marking and sliding scale on the BBC Mannheim mechanical calculating instrument.
  • Close-up of the Brown, Boveri & Cie Mannheim maker's inscription, metal guides and scale markings.
  • Rear view of the BBC mechanical calculating instrument showing the circular plate, raised fittings and Mannheim inscription.
Brown, Boveri & Cie (BBC) Mannheim Mechanical Calculating Instrument with Case

Brown, Boveri & Cie (BBC) Mannheim Mechanical Calculating Instrument with Case

€75,00 EUR
A distinctive piece of early twentieth-century industrial heritage: a mechanical calculating instrument by Brown, Boveri & Cie (BBC) Aktiengesellschaft, Mannheim. An engaging collectible for enthusiasts of early calculating tools, mechanical calculators, and European industrial history. According to the seller's information, this is an early mechanical calculating device, possibly a Vektoren-Rechenschieber (vector slide rule) or current-draw calculator, dating from approximately the 1920s–1940s. Its precise function and date have not been independently established. The instrument bears the D.R.G.M. marking. According to the seller, instruments of this type were used by engineers for industrial calculations in the field. Supplied in a black storage case with green lining and BBC lettering on the lid, described by the seller as original. The metal components, graduated scales, and maker's markings give this piece its distinctive technical character. Condition: Vintage condition with visible scratches, wear, and signs of use on the instrument and case. Described by the seller as complete; original completeness, operation, and calculating accuracy have not been independently verified. Please examine all six photos carefully for details and condition. Brand: Brown, Boveri & Cie (BBC) Aktiengesellschaft, Mannheim Type: Mechanical calculating instrument; exact application unconfirmed Marking: D.R.G.M. Seller-attributed date: Approximately 1920s–1940s Stated dimensions: 10 × 10 × 3.5 cm Stated weight: 233 g Includes: Storage case with green lining Only one example of this item is available. Tracked shipping is calculated separately.

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