Vintage IVO Probator mechanical hand tachometer with open wooden case, two contact attachments and original German instruction sheet

IVO Probator Mechanical Hand Tachometer with Wooden Case – c. 1940–1955

€125,00 EUR
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Vintage IVO Probator mechanical hand tachometer with open wooden case, two contact attachments and original German instruction sheet
  • Vintage IVO Probator mechanical hand tachometer with open wooden case, two contact attachments and original German instruction sheet
  • Close-up of the vintage IVO Probator tachometer dial with cream-colored face, numbered scale and IVO logo
  • Mechanical counter window, embossed Probator name and knurled control knob on the black tachometer housing
  • Original German instruction sheet for the Probator hand tachometer with D.R.P. marking and operating instructions
  • Closed wooden storage case for the IVO Probator hand tachometer, showing the front clasp and age-related wear
  • Vintage IVO Probator mechanical hand tachometer with open wooden case, two contact attachments and original German instruction sheet
  • Close-up of the vintage IVO Probator tachometer dial with cream-colored face, numbered scale and IVO logo
  • Mechanical counter window, embossed Probator name and knurled control knob on the black tachometer housing
  • Original German instruction sheet for the Probator hand tachometer with D.R.P. marking and operating instructions
  • Closed wooden storage case for the IVO Probator hand tachometer, showing the front clasp and age-related wear
IVO Probator Mechanical Hand Tachometer with Wooden Case – c. 1940–1955

IVO Probator Mechanical Hand Tachometer with Wooden Case – c. 1940–1955

€125,00 EUR
Vintage mechanical hand tachometer, model Probator, attributed to the German manufacturer IVO (Irion & Vosseler) of Schwenningen. According to the seller’s information, the instrument dates to circa 1940–1955, making it a characterful example of prewar or early postwar precision mechanics. This extensive set includes the tachometer, a wooden storage case described by the seller as original, the original German Gebrauchs-Anweisung instruction sheet bearing the D.R.P. (Deutsches Reichspatent) marking, and two contact attachments with rubber contact surfaces. Its black housing, cream-colored circular dial and mechanical counter give the instrument an authentic industrial appearance. The accompanying German instructions describe measuring the revolutions of shafts on machinery and engines and specify use up to 6,000 revolutions per minute. An appealing collectible for enthusiasts of historical measuring instruments, industrial technology and German precision mechanics. DETAILS Brand and model: IVO (Irion & Vosseler), Probator Hand Tourenzähler / tachometer, as identified by the seller Origin: Schwenningen, Germany, according to the seller Estimated date: circa 1940–1955, according to the seller Dimensions: approximately 15 × 5 × 4 cm Stated weight: 325 grams Includes: wooden storage case, German instruction sheet and two contact attachments CONDITION Attractive vintage appearance with visible signs of use and age on the housing and wooden case. The instruction sheet shows folds and age-related wear. Operation has not been confirmed, and calibrated measuring accuracy is not guaranteed. Please examine the photographs carefully for the condition and included components. Only one example of this item is available. Tracked shipping is charged separately.

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