17-642 CST Topographic Abney Level

17-642 CST Topographic Abney Level

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All brass construction, 6-3/8" long, internal focusing telescope. Durable black finish, square sighting tube, two interchangeable arcs. One arc graduated in percentage of grade and degrees, 0 to 60 in both directions. The other graduated in percentage of grade and topographic scale. Complete with Cordura belt loop case.

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