Mater
The mater and limb are of one-piece
construction. The limb of this instrument is nothing more
than the outer edge of the single plate. Scales on the
limb:
| Range & Units |
Numbered |
Geometry |
Location |
| Equal
hours |
1 - 24 Times of day |
Every 1 hours |
Circular, concentric |
None |
| Degree |
0 - 360 Degrees |
Every 5 degrees |
Circular, concentric |
None |
Womb
The
womb is
engraved for 51°; there are no other tympans for this
instrument.
Almucantars
| Divisions |
Labelled |
Style |
| Divided every 2° from 0° to 30° |
Labelled every 2° with (Gothic)
numerals |
Plain line. |
| Divided every 3° from 30° to 60° |
Labelled every 3° with (Gothic)
numerals |
Plain line. |
| Divided every 5° from 60° to 90° |
Labelled every 5° with (Gothic)
numerals |
Plain line. |
Azimuths
| Divisions |
Labelled |
Style |
| Divided every 15° |
Labelled every 15° with (Gothic)
numerals |
Plain line. |
Circles
| Type |
Labelled |
Style |
Notes |
| Equator |
|
Plain line. |
Engraved only below the horizon |
| Tropic of Capricorn |
|
Plain line. |
|
Lines
| Type |
Labelled |
Description |
| Unequal hours |
Numbered (Numbers in Numbers, engraved script) |
(Gothic), Plain line style. |
| Meridian line |
|
|
| Horizon rectus |
|
|
