SAP - Shetland Attack Pony

The Shetland Attack Pony is a new instrument for cave surveying. No more squinting through misted-up lenses, no more struggling to avoid steeply inclined legs and hunting for decent plumb points.

The Shetland Attack Pony is the first combined electronic compass and clino designed specifically for use underground. Field trials have shown that it will give a loop closure of better than 1%, slightly better than that provided by standard instruments.

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