Surveying Instruments: Their History and Classroom Use, 第 19 卷

alidade Arabic astrolabe astronomical Babylonian mathematics Bar-le-Duc base carried chorobates Christopher Clavius circle Clavius compass construction cord cross-staff crosspiece described determined diagrams Digges dioptra distance divided divisions earliest early edge Edition Egyptian equal exercises Figure Finaeus Frisius Gemma Frisius geometric square Gerbert Geschichte given Greek groma height Heron History of Mathematics horizontal Hulsius important instru instrument intersection Jacob's staff Leipzig length line of sight lineae London magnetic needle mark measured ment method Muslim navigation observer period permission perpendicular plane table plate plumb line plumb-bob plumb-bob levels position practical geometry problem quadrant recta References Regiomontanus Remarks right angles right triangle Roman ruler scale shadow square side simple sine straight line strument surveying surveyor tape Tartaglia teachers teaching theodolite tion trigonometry Tycho Brahe Vitruvius Wiedemann