RIV Vintage Bearing Life Calculator – Circular Slide Rule
€200,00 EUR
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A tangible counterpoint to the digital age, this RIV bearing life calculator brings engineering calculations back to lines, scales, and manual movement. The inscription “Abacus for Bearing Life Calculations” identifies its original purpose: calculating bearing service life.
The red-and-blue RIV logo, blue-and-white border, and finely printed calculation scales give this analog instrument a distinctive graphic character. An appealing collectible for enthusiasts of engineering history and industrial design, or a conversation piece for a thoughtfully arranged desk.
Brand/marking: RIV
Type: circular slide rule for bearing life calculations
Dimensions: 16 × 15 × 0.5 cm
Weight: 65 grams
Condition: described by the seller as being in perfect condition, with the disc turning smoothly. The photographs show the actual item, including visible signs of age and use.
Calculation accuracy has not been verified, and calibration is not guaranteed.
Only one example of this item is available. Tracked shipping is calculated separately.
RIV Vintage Bearing Life Calculator – Circular Slide Rule
€200,00 EUR