Technical instrument - Germany - 1950-1960 - Vintage manual tachometer
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Expert
Selected by Ashley Calvert
He has 15 years of experience trading 20th century glass and antiques.
Estimate € 140 - € 210
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Description from the seller
Vintage manual tachometer IVO "Probator" - Germany, mid 20th century - With original box
An excellent specimen of a mechanical tachometer (RPM counter) model "Probator", manufactured in Germany by the prestigious firm IVO (Irion & Vosseler) from Schwenningen. This precision instrument was essential in engineering to measure the RPMs of motors and industrial machinery before the digital era.
Technical details and condition:
• Manufacturer: IVO (Irion & Vosseler), Germany.
• Model: Probator.
• Casing: Finished in hard black enamel, with the model name and brand engraved.
• Dial: Analog for units and a 4-digit mechanical counter for hundreds/thousands.
• Aesthetic condition: Very good. The dial is clean and the body retains its original shine with minimal signs of use.
• Operation: Smooth mechanism. When the manual shaft is turned, both the needle and the numeric counter respond with precision.
• Box: Includes its original period rigid case, exterior in black synthetic leather and interior lined in red velvet, in excellent condition.
Box dimensions: 14.5 x 5 x 3.5 cm
Note for collectors: A robust piece of German engineering from the "Old School", ideal for collectors of technical tools or as an industrial decorative object.
Vintage manual tachometer IVO "Probator" - Germany, mid 20th century - With original box
An excellent specimen of a mechanical tachometer (RPM counter) model "Probator", manufactured in Germany by the prestigious firm IVO (Irion & Vosseler) from Schwenningen. This precision instrument was essential in engineering to measure the RPMs of motors and industrial machinery before the digital era.
Technical details and condition:
• Manufacturer: IVO (Irion & Vosseler), Germany.
• Model: Probator.
• Casing: Finished in hard black enamel, with the model name and brand engraved.
• Dial: Analog for units and a 4-digit mechanical counter for hundreds/thousands.
• Aesthetic condition: Very good. The dial is clean and the body retains its original shine with minimal signs of use.
• Operation: Smooth mechanism. When the manual shaft is turned, both the needle and the numeric counter respond with precision.
• Box: Includes its original period rigid case, exterior in black synthetic leather and interior lined in red velvet, in excellent condition.
Box dimensions: 14.5 x 5 x 3.5 cm
Note for collectors: A robust piece of German engineering from the "Old School", ideal for collectors of technical tools or as an industrial decorative object.
Details
Era
1900-2000
No. of items
1
Country of Origin
Germany
Material
Metal
Condition
Excellent condition: barely used with minimal signs of wear
Height
13.5 cm
Width
4.5 cm
Depth
3 cm
Estimated period
1950-1960
Title additional information
Vintage manual tachometer
