The classic STEMFIE spanner tool has been revised and is now available for download. It has new features as described below.

  • A 2BU ruler on the bottom and sides surfaces to measure block units (BU) divided into halves and quarters.
  • Wider waist measuring precisely 1BU (12.5 mm)
  • The gripping centers and the threaded hole are now located at evenly spaced block units.