Special Publications, Ausgabe 35

adjustment American Ephemeris azimuth star Borkum broken telescope transit cable house Cambridge centimeters chronograph clamp clock corrections clock relay clock room Coast and Geodetic collimation connected contact strips d d d D. C. Observer difference of longitude equatorial value exchange of signals eye end Fayal fillet footplate FREMONT MORSE GEODESY Geodetic Survey German observer h m m h m h m m Sum hanging level Harvard University Observatory hence instrument latitude levels LESTER JONES lost motion Meridian Stone metallic strips meters micrometer screw MORSE AND O. B. movable thread movable wires Naval Observatory numbered O. B. FRENCH obtained ocular ocular micrometer pier position probable error Rate per minute reversal Rockaway Difference Russian transit Sept setting circle sidereal clock Special Publication star places star transits Sum h m tion transit micrometer United States Coast Washington Far Rockaway weight weighted mean width of contact zenith distances δε