DESCRIPTION:
This unit measures the Refractive powers of safety eyewear ( Spherical refractive power , Astigmatism, & Resolving Powerr) , in accordance with ANSI Z87.1 2010 . (included is a 8 power adjustable telescope, targets ( sun burst and NSB definition), and associated fixtures. Also can be supplied with optical mirror to reduce distance from 35 feet (10.67m) to 17.5 feet ( 5.335m)
APPLICABLE STANDARD:
ANSI Z87.1 2010 5.1.4