PARAGON
SURVEYING INSTRUMENTS-NAMELY, TRANSITS, LEVELS, [ THEODOLITES, ] ALIDADES, COMPASSES [ AND PARTS; ALSO ACCESSORIES AND ATTACHMENTS FOR SUCH INSTRUMENTS-NAMELY, AUXILIARY TOP AND SIDE VIEW TELESCOPES, SOLAR ATTACHMENTS, OPTICAL MICROMETERS, OPTICAL LATERAL ADJUSTERS, MECHANICAL LATERAL ADJUSTERS, AUTO-REFLECTION TARGETS, AUTO-REFLECTION MIRRORS, AUTOMATIC OPTICAL PLUMB BOBS, CONTROL LEVELS WITH TANGENT SCREWS, PRISMATIC AND ELBOW EYEPIECES, FOCUS REDUCING LENSES, GRADIENTERS, SCALE READING MAG...
Expired · July 11, 1951 · 71616322 ·