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Tribrach with optical plumb and Tribrach without optical plumb.

Tribrach Optical Plumb

Wild-type Tribrachs, with or without optical plummet, offer precise plumbing of surveying instruments and adapters, and have a universal 5/8 x11 base plate.

These Tribrachs meet, or exceed, the quality and construction standards of leading Japanese, Swiss and German brands.


  • Superior price and quality combination
  • Circular levelling sensitivity: 10/2mm
  • Optical plummet focussing range: 1.5 to 50ft (0.5 to 15m)
  • Weight: 1.85lbs (0.84kg)