Proving Ring

Digital Proving Ring 

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The Morehouse Digital Proving Ring reduces operator error and keeps the known stability of a Morehouse analog proving ring.

Digital proving rings measure deflection of the ring in electronic "counts", rather than by a mechanical micrometer. This information can be interfaced to a computer, so data can be electronically logged, and the entire process can be automated programmatically. Calculations can be faster, with less operator action.

Proving Rings are known for:

Stability: When maintained, Proving Rings have little to zero drift
Longevity: Some Proving Rings built in the 1930's are still in use today
Accuracy: Proving Rings often maintain uncertainties of 0.0125 - 0.025 % of full scale
Reliability: There's a reason a Proving Ring is on the International Space Station. They do not fail.
Available for the following capacities:

Series    Capacities    Specifications
10K lbf and higher    better than 0.05 % of full scale (approx 10,000 counts of resolution)
6K lbf and higher    better than 0.025 % of full scale (approx 20,000 counts of  resolution)
2K lbf and higher    better than 0.0125 % of full scale (approx 40,000 counts of resolution)
Morehouse has converted many analog proving rings to digital proving rings. In every conversion that we have performed, the ring has vastly improved. We believe the elimination of operator error has, on average, reduced the Type A uncertainty by approximately 30 %.