379 SHORT BUT POWERFUL TELESCOPE CIRCLE SELECTION KNOB HAS STOPS MARKED H V KNURLED TELESCOPE CLAMP FITTED ILLUMINATION WITH INTERNAL WIRING OPTICAL MICROMETER FOR HORIZONTAL CIRCLE PROTECTED EASILY ADJUSTED PLATE BUBBLE TANGENTSCREW AND CLAMP ENCLOSED AGAINST DUST AND WITH DISTINCTIVE KNURLED HEADS EASYADJUSTMENT FOR LEVELLING SCREW BASE DESIGNED TO GIVE SUPPORT WITHOUT SHAKE COVER ON CIRCLE RFPEATING KNOB PREVENTS ACCIDENTAL MOVEMENT Fig- 35-

Digitale Tijdschriftenarchief Stichting De Hollandse Cirkel en Geo Informatie Nederland

Tijdschrift voor Kadaster en Landmeetkunde (KenL) | 1956 | | pagina 29