Dialling performed instrumentally by our hemisphere in plane projected and first fitted by Mr. William Oughtred and laid down according to his method formerly published for this very subject : together with twentie one several diagrams or schemes demonstratively shewing the reason and ground-work of all dialling, as also how to know, distinguish and set down the hour-lines for both faces of all planes at one working / by a practitioner in the same art.

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Author:	Oughtred, William, 1575-1660.
Title:	Dialling performed instrumentally by our hemisphere in plane projected and first fitted by Mr. William Oughtred and laid down according to his method formerly published for this very subject : together with twentie one several diagrams or schemes demonstratively shewing the reason and ground-work of all dialling, as also how to know, distinguish and set down the hour-lines for both faces of all planes at one working / by a practitioner in the same art.
Print source:	Dialling performed instrumentally by our hemisphere in plane projected and first fitted by Mr. William Oughtred and laid down according to his method formerly published for this very subject : together with twentie one several diagrams or schemes demonstratively shewing the reason and ground-work of all dialling, as also how to know, distinguish and set down the hour-lines for both faces of all planes at one working / by a practitioner in the same art. Oughtred, William, 1575-1660. London: Printed by William du-Gard and are to bee sold by William Hope, 1652.
Notes:	Running title: The art of dialling. Reproduction of original in the Harvard University Library.
Subject terms:	Dialing. Time.
URL:	https://name.umdl.umich.edu/A53547.0001.001
How to cite:	For suggestions on citing this text, please see Citing the TCP on the Text Creation Partnership website.

Table of Contents

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title page

TO THE READER.

A Definition of certain Terms or VVords hereafter used for the better understanding of the ensuing Discours.

A Plane.

The Horizontal line.

A Perpendicular line.

Declination.

Inclination.

Pole of the world.

Pole of the Plane.

Pole of the Meridian of the Plane.

Meridian or Hour-circle.

The proper Meridian of the Plane.

Meridian of the place.

The Prime Vertical Circle.

The Scale.

The limb of the Instrument.

An Hour-line.

The Substiler line.

Diagram.

An explanation of the Instrument.

First, The Horizontal Plane.

An upright Plane fully beholding the North or South.

The Vertical Inclining Plane.

The upright declining Plane.

The Declining Inclining Plane.

The Meridian Plane.

The Meridian Inclining Plane.

The Polar Plane.

The Polar declining Plane.

How to set down upon the Instrument these several Planes following, viz.

First, The upright declining Plane.

How to set upon the Instrument any Vertical Incliner, or any Declining Inclining Plane.

To finde the place of the Pole of every upright Plane.

To finde the place of the Pole of every Inclining, or of every Declining Inclining Plane.

To draw the Hour-lines upon all Planes with Centers.

To draw the Substiler line upon all Planes with Centers.

To finde the height of the Pole above all Planes having Centers.

To place the Stile or Gnomon.

To know what hour-lines must bee in use for either face of any Plane whatsoever.

Here followeth a particular Explanation of the several Diagrams following, viz.

Diagrams N^o A & A.

An explanation of the Diagrams N^o B & B.

An Explanation of the Diagrams N^o C & C.

An explanation of the Diagrams N^o D & D.

An explanation of the Diagrams N^o E & E.

An explanation of the Diagrams N^o F & F.

An explanation of the Diagrams N^o G & G.

An explanation of the Diagrams N^o H & H.

An Explanation of the Diagrams N^o I & I.

The Canon.

An explanation of the Diagrams K & K.

publisher's note

ERRATA.