plumb line

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plumb line

(plŭm līn)
The line that is formed when a string with a weight tied at the end is suspended vertically.
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The latitudes were found from stars near the zenith whose positions were measured by means of an instrument called a "zenith sector", and referred to the local vertical through the use of a plumb line.
The 300-plus items included silver coins, jewels, gold jewelry with pearls, a solid gold ring with diamonds, two hand-held bronze cannons, numerous pistols and cannons, guild pewter plates, navigation compasses, plumb lines for measuring depth, a pistol, sword sheaths, ornaments, plates, silverware, sword handles, a device to measure the ship's speed, bronze candlesticks, and a previously discovered bell from 1693 with the phrase 'Soli Deo Gloria'.
The objects recently found include silver coins, jewels, gold jewelry with pearls, a solid gold ring with diamonds, two hand-held bronze cannons, numerous pistols and cannons, a bell from 1693 with the phrase 'Soli Deo Gloria', guild pewter plates, navigation compasses, plumb lines for measuring depth, a pistol, sword sheaths, ornaments, plates, silverware, sword handles, a device to measure the ship's speed, and bronze candlesticks.