id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
44206	Robinson, John	Old-Time Nautical Instruments			.txt	text/plain	4432	276	72	OLD-TIME NAUTICAL INSTRUMENTS What sort of instruments did the Colonial ship-masters carry? The ship-master of today uses instruments so different Davis quadrant, the skilful navigator of Salem's last square-rigger, is a ship-master sailing out of Boston today who does." The Davis quadrant was in common use all through the eighteenth century and It included,--sea-compass, cross-staff, chart, quadrant, basis of all future instruments of its class,--cross-staff, quadrant, [Illustration: SEVENTEENTH CENTURY MARINER USING A CROSS-STAFF [Illustration: SEVENTEENTH CENTURY MARINER USING DAVIS' QUADRANT navigation it is called "sea-quadrant." The earlier form used by the half-way between a cross-staff and the Davis quadrant, is illustrated [Illustration: HADLEY QUADRANTS (OCTANTS) IN PEABODY MUSEUM, SALEM That so important an instrument as a telescope or spy-glass is rarely instruments with which observations could be made to obtain their instruments, the wonder is how the old ships were navigated through We do not know exactly what instruments the old shipmasters carried	./cache/44206.txt	./txt/44206.txt