Richter Collimator Objectives FOR SPECIAL USES:

     The R-2 Autocollimator works at its best with testing lenses of from 1/2 to 1/10 the focal length of the collimator objective. The standard 254mm. objective may be exchanged with shorter or longer focal length objectives for use with cameras with unusually short or long focus lenses.

Viewed from left to right: (Special order long lens) then 500mm, 254mm (with autocollimator attached) 180mm  130mm and 60mm.