It's an antique sextant. Sailors used these to find their position by the stars.

这是个古董六分仪，水手使用这个配合星星来确认自身方位。

Third mate: we have sextants and magnetic compass on board the boat.

救生艇上有六分仪和磁罗经。

Raising his sextant, Captain Nemo took the altitude of the sun, which would give him his latitude.

尼摩船长带了他的六分仪，测量太阳的高度，因此可以。知道船所在的纬度。

Down in the bilge, in a duffel bag, were a radio, sextant, compass and clock, in case of emergency.

舱底的一个行李袋里装着收音机、六分仪、指南针和时钟，以备不时之需。

The place is stored with great variety of sextants, quadrants, telescopes, astrolabes, and other astronomical instruments.

这个地方存放着各种各样的六分仪、象限仪、望远镜、星盘和其他天文仪器。

Like the sextant here. $50 for this, which is a bargain.

这个六分仪，50美元，非常超值。

For this, you'll need a compass, a sextant, and an understanding of the night sky.

为此， 您需要一个指南针、一个六分仪以及对夜空的了解。

At nights, he hid in the shade, looking into the sky with a sextant.

晚上，他躲在阴暗处，用六分仪观察星空。

They were first used by astronomers hundreds of years B.C. and sailors used them in the Middle Ages until astrolabes were replaced by sextants.

公元前数百年，天文学家首次使用它们，水手们在中世纪使用它们，直到六分仪取代了星盘。

There were old clocks and vases, mortars and retorts, knives and dolls, quill pens and bookends, octants and sextants, compasses and barometers.

有旧钟和花瓶、迫击炮和曲颈瓶、刀和洋娃娃、羽毛笔和书挡、八分仪和六分仪、圆规和气压计。

This is likely to have been of less importance, as such navigation would have been using sextants which require an overhead view.

这可能不太重要，因为这样的导航会使用需要俯视图的六分仪。