Astronomy, a handy manual for students and others (1918)
Dyson, Frank Watson, Sir, 1868-1939 · New York, E.P. Dutton & Co. · leaf 77
Diag. xxxiv. Diag. XXXV. accuracy by him, consisted in having a large quadrantof a circle mounted on a wall which pointed accuratelynorth and south (Diagram XXXIV). The arc of thequadrant was divided into degrees and further sub-divided into minutes (as in Diagram XXXV). Thedirection of the star…
Astronomy
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