The English globe being a stabil and immobil one, performing what the ordinary globes do, and much more / invented and described by the Right Honorable, the Earl of Castlemaine ; and now publish't by Joseph Moxon ...
About this Item
Title
The English globe being a stabil and immobil one, performing what the ordinary globes do, and much more / invented and described by the Right Honorable, the Earl of Castlemaine ; and now publish't by Joseph Moxon ...
Author
Castlemaine, Roger Palmer, Earl of, 1634-1705.
Publication
London :: Printed for Joseph Moxon ...,
1679.
Rights/Permissions
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Subject terms
Astronomy -- Early works to 1800.
Globes -- Early works to 1800.
Cite this Item
"The English globe being a stabil and immobil one, performing what the ordinary globes do, and much more / invented and described by the Right Honorable, the Earl of Castlemaine ; and now publish't by Joseph Moxon ..." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A31232.0001.001. University of Michigan Library Digital Collections. Accessed May 17, 2024.
Pages
OPERATION. VII. How to draw a Line Parallel to the Horizon; together with two ways how to place truly all paper Draughts on their respective Plane.
HAving lately advised you To Delineate all Dials onPa∣per, before you draw them on your designed Plane, and ha∣ving show'd you how to describe this Dial, 'tis now time to teach you how to draw an Horizontal Line on this Plane, that you may thereby truly place your Draughts. Slip therefore out your two Rulers, which are under the the Pedestal (as I already mentioned) and placing the end of one on a convenient Center▪ (chosen by you) in your Plane, you'l have by the end of the other (when the Plummet falls on the Asterisk or little Star) a
cond Point, and consequently marks to draw the required line by; so that if you then place the Center of your said Draught on the Center of the Plane, and its 6 a Clock Hour Line on your Horizontal Line, all the other Lines will fall on their true places, and thereby show you where (with a Cole or the like) to mark out points for the perfect and final drawing of them. The Cock also of the Paper Dial, will direct you in the placing of the other; for they are both to be of the same height above their respective Planes, with their Tops pointing the same way; viz. downwards to the Horizon in all these South Dials.
But if you will have yet a more easy way of placing a PaperDraught not only on this, but on any Plane for which 'tis made, look what a Clock 'tis by your Globe, and moving your said Draught on its Plane 'till it shows exactly the true Hour, do but fix it there, and you may mark out the Points for your fair Lines with all the ease imaginable.