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searching for Resistograph 2 found (3 total)

alternate case: resistograph

Robert Stewart Hyer (423 words) [view diff] exact match in snippet view article find links to article

death in 1929. Before his death, Hyer applied for a patent for the "resistograph" he invented to locate oil in West Texas and was elected a member of
Conservation and restoration of totem poles (2,124 words) [view diff] exact match in snippet view article find links to article
the pole is checked for rot and decay and can be done with a resistograph. "The resistograph uses a very fine drill bit 20" long which gives graphic chart