2nd Sight's InstaCaliper comes with caliper heads in three sizes: 50mm (2"), 100mm (4"), and 150mm (6"). To measure tree diameters or circumferences accurately with the 50mm (2") caliper head, you need configure your InstaCaliper app for that size caliper head.

To configure:

  1. Launch the InstaCaliper app on your handheld device (Ruggedized Handheld Computer or Android-based device).
  2. Once the InstaCaliper app is open, press and hold the "Config" button.
  3. Enable "Caliper." on the "Config" screen.
  4. Press radio button next to "50mm (2").

NOTE: The default offsets were determined by 2nd Sight engineers. We recommend testing the 50mm caliper head for accuracy using calibrated dowels after configuring the 50mm head with these default settings. If the 150mm head does not appear to be measuring the calibrated dowels accurately, please contact 2nd Sight at 509-381-2112.

If you have any questions or need assistance, please contact 2nd Sight at 509-381-2112 or info@2ndsightbio.com