DIALLING.

PLATE CLXXIV.

Fig. 1

A spherical diagram showing the celestial sphere with the equator and ecliptic. The equator is marked with the zodiac signs. The ecliptic is shown at an angle to the equator. The center of the sphere is marked with 'C'.

Fig. 2

A spherical diagram showing the celestial sphere with the equator and ecliptic. The equator is marked with the zodiac signs. The ecliptic is shown at an angle to the equator. The center of the sphere is marked with 'C'.

Fig. 3

A circular diagram representing a dial face. It has a central point and concentric circles. A triangular gnomon is shown casting a shadow on the dial face. The outer ring is marked with Roman numerals for the hours.

Fig. 4

A circular diagram representing a dial face. It has a central point and concentric circles. A triangular gnomon is shown casting a shadow on the dial face. The outer ring is marked with Roman numerals for the hours.

Fig. 7

A rectangular diagram showing a dial face. It has a central point and concentric circles. A triangular gnomon is shown casting a shadow on the dial face. The outer ring is marked with Roman numerals for the hours.

Fig. 5

A circular diagram representing a dial face. It has a central point and concentric circles. A triangular gnomon is shown casting a shadow on the dial face. The outer ring is marked with Roman numerals for the hours.

Fig. 6

A large, complex diagram showing a dial face. It has a central point and concentric circles. A triangular gnomon is shown casting a shadow on the dial face. The outer ring is marked with Roman numerals for the hours.

Fig. 8

A small triangular diagram showing a gnomon casting a shadow on a dial face. The outer ring is marked with Roman numerals for the hours.

Fig. 9

A diagram showing a dial face with a grid. It has a central point and concentric circles. A triangular gnomon is shown casting a shadow on the dial face. The outer ring is marked with Roman numerals for the hours.

Fig. 11

A diagram showing a dial face with a grid. It has a central point and concentric circles. A triangular gnomon is shown casting a shadow on the dial face. The outer ring is marked with Roman numerals for the hours.
A scale bar at the bottom of the page. It is divided into three sections: 'The Line of Chords' (top), 'The Line of Tangents' (middle), and 'The Line of Hours' (bottom). The 'Line of Hours' section is marked with Roman numerals I, II, III, IV, V, VI.
A blank, aged, cream-colored page with significant water damage and staining.This image shows a single, blank page of aged paper. The paper has a warm, cream-colored tone and a slightly textured surface. It is heavily marked by numerous water stains and discolorations, which appear as irregular, yellowish-brown patches of varying sizes scattered across the entire surface. These stains are most prominent in the upper half and along the left edge, suggesting historical exposure to moisture. The overall appearance is that of an old, weathered document page.

DIALLING.

PLATE CLXXV.

Fig. 1.

Fig. 1: A spherical diagram showing the celestial sphere with latitude lines and hour circles. The center is labeled 'E'. A horizontal line represents the horizon, and a vertical line represents the axis. The latitude is marked as 'Lat. 51 1/2°'.

Fig. 2.

Fig. 2: A spherical diagram similar to Fig. 1, showing the celestial sphere with latitude lines and hour circles. The center is labeled 'E'. The latitude is marked as 'Lat. 51 1/2°'.

Fig. 3.

Fig. 3: A circular dial face with Roman numerals I-XII. It features a shaded triangular sector and concentric circles with degree markings.

Fig. 4.

Fig. 4: A circular dial face with Roman numerals I-XII. It features a shaded triangular sector and concentric circles with degree markings.

Fig. 7.

Fig. 7: A square diagram with a shaded right-angled triangle. It includes degree markings along the top and bottom edges.

Fig. 5.

Fig. 5: A circular dial face with Roman numerals I-XII. It features a shaded sector and concentric circles with degree markings. The latitude is marked as 'Lat. 51 1/2°'.

Fig. 8.

Fig. 8: A large circular diagram with multiple concentric arcs. The outer arc is labeled 'Latitude' and the inner arc is labeled 'Hour'. The bottom arc is labeled 'Hours' with Roman numerals I-XII.

Fig. 6.

Fig. 6: A simple right-angled triangle with vertices labeled C, R, and M. The base is labeled 'Style'.

Fig. 11.

Fig. 11: A diagram showing a gnomon (style) casting a shadow on a dial face. It includes labels for 'Shadow Line', 'Gnomon', 'Sun's Height', 'Elevation', 'Azimuth', and 'Hour'.

Fig. 10.

Fig. 10: A diagram showing a gnomon casting a shadow on a dial face. It includes labels for 'Style', 'Gnomon', 'Shadow Line', and 'Hour'.

Fig. 9.

Fig. 9: A scale bar with three horizontal lines. The top line is labeled 'The Line of Chords' with markings from 0 to 90. The middle line is labeled 'The Line of Latitudes' with markings from 0 to 90. The bottom line is labeled 'The Line of Hours' with Roman numerals I-XII.
A blank, aged, cream-colored page with visible water stains and discoloration.This image shows a blank, aged, cream-colored page, likely an endpaper or flyleaf from an old book. The paper has a slightly textured appearance and is marked by numerous small, irregular brown spots and stains, characteristic of foxing or water damage over time. There is no text or other markings on the page.
No. 3.
Fig. 3: A large rectangular grid with a series of curved lines forming a V-shape. The top edge is labeled 'HOURS' and the bottom edge 'MINUTES'. The right side shows a series of lines radiating from a point, labeled 'EQUINOCTIAL'.
No. 1: A vertical rectangular structure with a grid of lines. It has a small circular ring at the top and a base. The grid lines are labeled with numbers.
Fig. 1: A perspective view of a mechanical device. It consists of a long arm pivoted on a base, with a smaller arm attached to the end of the main arm. A small globe is visible on the base.
Fig. 2.
Fig. 2: A geometric diagram showing a right-angled triangle with various construction lines and points labeled with letters.
No. 3.
No. 3: A vertical rectangular structure with a grid of lines. It has a small circular ring at the top and a base. The grid lines are labeled with numbers.
Fig. 4.
Fig. 4: A circular dial with a cross-shaped arm. The arm has a small globe at its center. The dial face has markings for hours and minutes.
Fig. 5.
Fig. 5: A perspective view of a complex mechanical device. It features a central globe on a stand, with several curved arms extending from a base. A compass is visible on the base.
Fig. 6.
Fig. 6: A complex geometric diagram showing a star-like shape with many lines radiating from a central point. The lines are labeled with letters and numbers.
No. 7.
No. 7: A circular dial with a cross-shaped arm. The arm has a small globe at its center. The dial face has markings for hours and minutes.
A blank, aged, cream-colored page with visible water stains and discoloration.This image shows a single, blank page of aged paper. The paper has a warm, cream-colored tone and a slightly textured surface. It is covered with numerous small, irregular brown spots and larger, fainter stains, which are characteristic of water damage or foxing over time. The stains are most prominent in the upper half and along the right edge. There is no text, handwriting, or printed content on the page.
Fig. 4.
Fig. 4: A vertical cylindrical dial with a grid of lines. The top is labeled 'A' and 'D', and the bottom is labeled 'B' and 'C'. A horizontal line 'E' is shown to the left. A small ring is at the top center.
Fig. 5.
Fig. 5: A large rectangular grid with a series of curved lines forming a V-shape. The top edge is labeled 'A' and the bottom edge is labeled 'C'. The left edge is labeled 'B' and the right edge is labeled 'D'. The text 'Latitude 50° 30'' is written in the lower right quadrant of the grid.
Fig. 1.
Fig. 1: A mechanical dial on a rectangular base. It features a long arm with a grid and a smaller vertical arm. A compass is visible on the base.
Fig. 2.
Fig. 2: A geometric diagram showing a right-angled triangle with vertices labeled 'A', 'B', and 'C'. A shaded area is shown within the triangle.
Fig. 3.
Fig. 3: A complex geometric diagram with multiple intersecting lines and points labeled with letters like 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'.
Fig. 6.
Fig. 6: A circular dial with a grid and a central arm. A ring is at the top center.
Fig. 9.
Fig. 9: A large, ornate mechanical dial on a circular base. It features a central sphere and multiple curved arms with Roman numerals. A compass is visible on the base.
Fig. 8.
Fig. 8: A complex geometric diagram with a central circle and multiple curved arms. It is labeled with letters 'A' through 'Z'.
Fig. 7.
Fig. 7: A circular dial with a grid and a central arm. It is labeled with letters 'A' through 'Z'.
A blank, aged, cream-colored page with numerous brown spots and stains, indicating water damage or foxing.This image shows a single, blank page of aged paper. The paper has a warm, cream-colored tone and a slightly textured surface. It is heavily marked with numerous small, irregular brown spots and larger, fainter stains, which are characteristic of foxing or water damage over time. There is no text, handwriting, or printed content on the page.

Fig. 1

Geometric diagram showing a square with a shaded triangle and construction lines.

Fig. 2

Geometric diagram showing a square with a shaded triangle and construction lines.

Fig. 3

Geometric diagram showing a rectangle with construction lines and Roman numerals at the top and bottom.

Fig. 4

Geometric diagram showing a square with a shaded triangle and construction lines.

Fig. 5

Geometric diagram showing a square with a shaded triangle and construction lines.

Fig. 6

Circular diagram with a central circle and radial lines, with numbers around the perimeter.

Fig. 7

Geometric diagram showing a square with a shaded triangle and construction lines.

Fig. 8

Geometric diagram showing a complex construction with a grid and construction lines.

Fig. 9

Geometric diagram showing a rectangle with construction lines.

Fig. 10

Geometric diagram showing a complex construction with a grid and construction lines.

Fig. 11

Circular diagram with a central circle and radial lines, with numbers around the perimeter.

Fig. 12

Geometric diagram showing a shaded trapezoidal shape with construction lines.

Fig. 13

Geometric diagram showing a shaded trapezoidal shape with construction lines.

Fig. 14

Circular diagram with a central circle and radial lines, with numbers around the perimeter.

Fig. 15

Circular diagram with a central circle and radial lines, with numbers around the perimeter.

Fig. 16

Circular diagram with a central circle and radial lines, with numbers around the perimeter.
A blank, aged, cream-colored page with numerous small brown spots (foxing) and faint, illegible markings.This image shows a blank, aged, cream-colored page, likely an endpaper or flyleaf from an old book. The paper is covered with numerous small, irregular brown spots, known as foxing, which are characteristic of old paper. There are also some faint, illegible markings or smudges scattered across the surface. The page is framed by a thin, slightly darker border, possibly from the book's binding or the scanning process.
Fig. 1.
Fig. 1: A square dial plate with Roman numerals I-XII on the bottom and VI-XII on the sides. A shaded triangular sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 2.
Fig. 2: A square dial plate with Roman numerals I-XII on the bottom and VI-XII on the sides. A shaded triangular sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 3.
Fig. 3: A rectangular dial plate with Roman numerals I-XII on the top and bottom. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 4.
Fig. 4: A square dial plate with Roman numerals I-XII on the bottom and VI-XII on the sides. A shaded triangular sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 5.
Fig. 5: A square dial plate with Roman numerals I-XII on the bottom and VI-XII on the sides. A shaded triangular sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 6.
Fig. 6: A circular dial plate with Roman numerals I-XII around the perimeter. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 7.
Fig. 7: A square dial plate with Roman numerals I-XII on the bottom and VI-XII on the sides. A shaded triangular sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 8.
Fig. 8: A complex geometric diagram showing a rectangular grid with Roman numerals I-XII. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 10.
Fig. 10: A simple rectangular diagram with Roman numerals I-XII on the top and bottom edges.
Fig. 9.
Fig. 9: A complex geometric diagram showing a rectangular grid with Roman numerals I-XII. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 13.
Fig. 13: A circular dial plate with Roman numerals I-XII around the perimeter. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 11.
Fig. 11: A 3D perspective view of a dial plate mounted on a rectangular base. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 12.
Fig. 12: A 3D perspective view of a dial plate mounted on a rectangular base. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 14.
Fig. 14: A circular dial plate with Roman numerals I-XII around the perimeter. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 15.
Fig. 15: A circular dial plate with Roman numerals I-XII around the perimeter. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
Fig. 16.
Fig. 16: A circular dial plate with Roman numerals I-XII around the perimeter. A shaded sector is shown in the center, with lines radiating from its apex to the outer edge.
A blank, aged page with numerous brown spots and stains, indicating significant water damage or foxing.This image shows a single, blank page of aged paper. The paper has a warm, yellowish-beige tone. It is heavily marked with numerous small, irregular brown spots and larger, fainter stains, which are characteristic of foxing or water damage over time. The distribution of these spots is uneven, with a higher concentration in the upper half of the page. There is no text, handwriting, or printed content on the page.
A blank, aged, cream-colored page with numerous small brown spots (foxing) scattered across the surface.This image shows a blank, aged, cream-colored page, likely an endpaper or flyleaf from an old book. The paper has a slightly textured appearance and is covered with numerous small, irregular brown spots, known as foxing, which are characteristic of old paper. There is no text or other markings on the page.
A blank, aged, cream-colored page, likely an endpaper or flyleaf of a book. The page shows signs of wear, including faint smudges and discoloration, particularly along the right edge.This image shows a blank, aged, cream-colored page, likely an endpaper or flyleaf from an old book. The paper has a slightly textured appearance with some minor discoloration and faint smudges, particularly along the right edge. There is no text or other markings on the page.
A blank, aged, cream-colored page, likely an endpaper or flyleaf of a book. The page shows signs of wear, including faint smudges and discoloration, particularly along the right edge.This image shows a blank, aged, cream-colored page, likely an endpaper or flyleaf from an old book. The paper has a slightly textured appearance with some minor discoloration and faint smudges, particularly along the right edge where it appears to be bound. There is no text or other markings on the page.
A blank, aged, cream-colored page, likely an endpaper or flyleaf of a book. The page shows signs of wear, including faint smudges and discoloration, particularly along the right edge.This image shows a blank, aged, cream-colored page, likely an endpaper or flyleaf from an old book. The paper has a slightly textured appearance with some minor discoloration and faint smudges, particularly along the right edge. There is no text or other markings on the page.
A blank, aged, cream-colored page, likely an endpaper or flyleaf of a book. The page shows signs of wear, including discoloration and faint smudges. The left edge reveals the binding material.This image shows a blank, aged, cream-colored page, likely an endpaper or flyleaf from an old book. The paper has a slightly textured appearance with some minor discoloration and faint smudges, particularly near the top left corner. The left edge of the page shows the binding material, which appears to be a light-colored fabric or paper. There is no text or other markings on the page.
Embossed circular seal on a brown leather book cover. The seal features a laurel wreath surrounding a central sunburst design. The text 'ADVOCATORUM' is arched at the top and 'BIBLIOTHECA' is arched at the bottom.An embossed circular seal is centered on a brown leather book cover. The seal is composed of a laurel wreath. Inside the wreath, the word 'ADVOCATORUM' is arched across the top, and 'BIBLIOTHECA' is arched across the bottom. In the center of the wreath is a sunburst or star-like emblem. The leather cover shows signs of age, including wear, scratches, and discoloration.