astrolabe
noun /ˈæstrəleɪb/
/ˈæstrəleɪb/
(astronomy- a device used in the past for measuring the distances of stars, planets etc. and for calculating the position of a ship
星盘,等高仪(旧时用于测量天体距离或计算船只位置) 词源late Middle English: from Old French astrelabe, from medieval Latin astrolabium, from Greek astrolabon, neuter of astrolabos ‘star-taking’.