A tutor to astronomie and geographie, or, An easie and speedy way to know the use of both the globes, coelestial and terrestrial in six books : the first teaching the rudiments of astronomy and geography, the 2. shewing by the globes the solution of astronomical & geographical probl., the 3. shewing by the globes the solution of problems in navigation, the 4. shewing by the globes the solution of astrological problemes, the 5. shewing by the globes the solution of gnomonical problemes, the 6. shewing by the globes the solution of of [sic] spherical triangles : more fully and amply then hath ever been set forth either by Gemma Frisius, Metius, Hues, Wright, Blaew, or any others that have taught the use of the globes : and that so plainly and methodically that the meanest capacity may at first reading apprehend it, and with a little practise grow expert in these divine sciences / by Joseph Moxon ; whereunto is added Antient poetical stories of the stars, shewing reasons why the several shapes and forms are pictured on the coelestial globe, collected from Dr. Hood ; as also a Discourse of the antiquity, progress and augmentation of astronomie.

To take Altitudes by the Astrolabe.

The Astrolabe is a round Instrument, flat on either side, upon one of the flats or Plains is discribed a Circle as B C D E, divided into 360, equal parts or degrees, numbred from the line of Level B A C, with 10, 20, 30, &c. to 90. in the Per∣pendicular D C. Upon the perpendicular is fastned a Ring as F, so as the Instrument hanging by it, the line of Level may hang pa∣rallel to the Horizon. Upon the Center is a moveable Label or Ruler, as G H, whereupon is placed two Sights as I K.

[illustration]

If you desire further instructions for making this Instrument, you may peruse M^r Wright in his Division of the whole Art

of Navigation, annexed to his Correction of Errors: where he also shews the use of it at large; which in brief is as follows.

You must hold the Astrolabe by the Ring in your left hand, and turning your right side to the Sun, lift up the Label with your right hand, till the beams of the Sun entring by the hole of the uppermost Vane or Sight, doth also pierce through the hole in the nethermost Vane of Sight; and the deg. and part of deg. that the Label lies on is the height of the Sun above the Horizon.

But if it be a Star you would observe; you must use the A∣strolabe as you were directed to use the Quadrant, holding it up to your Cheek bone, and looking through the Sights, &c.