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Brunton 4090 Collapsible Jacob's Staff

The lightweight Brunton 4090 collapsible Jacob's Staff is used by geologists to measure rock layers in the field. Brunton tools are compatible to be attached to the top of the staff, such as the Brunton OmniSlope. Brunton transits can be added with the Ball & Socket Transit Mount. The staff can also be used as a monopod (with standard threads) for cameras or binoculars/monocular. In addition, it can be used as a trekking pole as well.


  • 250mm markings and indicators for 1.5m extension for Jacob's Staff stratigraphic measurements
  • Standard 1/4-20 UNC thread
  • Three-section aluminium pole
  • Can collapse to fit in backpack
  • Extend to use as trekking pole
  • Comfortable EVA handle and padded wrist strap
  • Removable rubber trekking foot cover and strong carbide tip


Description Brunton 4090 Collapsible Jacob's Staff
Adjustable Length 1500mm max
Collapsed Dimensions 650mm min
Weight 270g (9.5oz)