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 - ABDO College

ABDO Frame Rule with instruction booklet


An essential item for dispensing opticians, the ABDO frame rules was designed by George Clayton and is produced by the Association of British Dispensing Opticians. The rule will enable the user to accurately measure the following:

  • Interpupillary Distance (PD)
  • Boxed Lens Size (Horizontal and Vertical)
  • Distance Between Lenses
  • Boxed Centre Distance
  • Crest Height
  • Bridge Projection
  • Distance Between Rims
  • Bridge Height
  • Bridge Width

For an electronic PDF copy of the instruction booklet please click here

Essential for the following ABDO College courses:

  • Fellowship Dispensing Diploma
  • Foundation Degree in Ophthalmic Dispensing