Box 19: RGO 101/1/TB/Y-Z, TC/Y-Z, TD/Z
Contains 3 Results:
TC: MTC [Mirror Transit Circle] Drawings, 1951 - 1962
TD: Modified Astrolabe Prism Mount, 1973 - 1974
A set of 21 drawings of the Modified Astrolabe Prism Mount, originally rolled together and labelled 'TD Astrolabe, 1st system Nos. not m/f'. Includes drawings of sizes W, X and Z, W being the largest.
TB: RTC [Cook Reversible Transit Circle] drawings, 1957 and 1977-1980
A set of 107 drawings of the Cook Reversible Transit Circle, originally rolled together and labelled 'TB RTC, 1st system Nos. not m/f'. Includes W, X, Y and Z sized drawings of two distinct date ranges, 1957 and 1977-1980.
The Cook Reversible Transit Circle was mounted in the Christie Enclosure at the Royal Observatory Greenwich from 1936-1953. It was then moved to RGO Herstmonceux where it was used until 1982.