Vernier Caliper Radius Gauge

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After succeeding in creating a radius gauge that measured the diagonal, I discovered it was too labor-intensive to make my calculations after each measurement. This alternative requires more precise measuring and utilizes the fact that flat depth gauges on verniers are centered with the caliper body. Extend the depth gauge until it starts to touch the object; take your reading - this method will provide accurate results from zero, so no need to re-zero. This modification will fit most calipers brands easily; it's not a snug fit but will sit square.