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If you have an older proving ring and want to make it easier to use Morehouse can help.  We have converted lots of analogue rings with very positive results.  The digital ring reduces operator error, resulting in about a 25 - 50 % improvement in accuracy. 

Proving Rings Digital Conversion


Reduce operator error and keep the known stability of Morehouse Proving Rings. 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.

Available for the following capacities:





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)

Note:  In every conversion, 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 %.

Digital Proving Rings Datasheet PD-2110.pdf Download