top of page
Fairbanks Datum Rule

The extremely versatile Fairbanks Datum Rule can be used to take the majority of measurements relating to frame dispensing. It pre-dates the introduction of the boxed lens system but still remains a dependable and adaptable measurement gauge, used by dispensing opticians and optometrists throughout the UK.

Measurements that can be taken include:

  • Distance between lenses

  • Bridge width

  • Geometrical inset

  • Bridge height

  • Boxed lens size

  • Bridge width

  • Front angle of pad

  • Angle of side

Fairbanks Datum Rule

  • DI04

bottom of page