Model 622 – Light Field Ruler – Sun Nuclear

This Light Field Ruler tool from Sun Nuclear (formerly Gammex) is a tool to measure the coincidence of the light and radiation fields of analog or digital flat plate/film X-ray units including mammography systems.

The unit consists of the body which houses a strip of persistent phosphorescent material and calibration scribe marks with 1 mm spacing.  A BB is also aligned with this mark that will show a small speck of film is used for a permanent record.

Light Field Ruler features:

• constructed out of Solid Water material
• pocket size for convenience
• convenient “Glow” time of 5-10 minutes