SPECIMEN III.—Click-plate 96.
| Bed-plate. | Slide rest. | Circles done. | Tool. | |
| 1¼ | 1⅛ | 8 | 36 | |
| 4¼ | 2⅛ | 24 | ||
| 5⅛ | 11¾ | 24 | ||
| 21½ | 4¾ | 96 | ||
| 27¾ | 1½ | 96 | 28 |
SPECIMEN IV.
The centre of this is a star of six curved rays, described by fixing the cutter at the centre and turning the mandrel by hand through so many divisions—for convenience so many 48ths of the circumference. These rays are marked by B. (The segment stop is constructed for this very kind of work, and is to be used in the present case):—
| Bed-plate. | Slide rest. | Arcs done for star. |
| 5 | B 5 | 6 (12/48ths of the circle) |
| 5 | B 5 | 12 (11/48ths " ) |
| 5 | B 5 | 12 (10/48ths " ) |
| 5 | B 5 | 12 ( 8/48ths " ) |
| 14⅛ | 5 | 24 (2 done, 2 missed) |
| 19¾ | ½ | 96 |
| 24¼ | 4 | 32 |
| 29½ | 2½ | 32 (intersecting) |
| 30½ | 2 | 32 |
SPECIMEN V.—Catherine wheel; tool 28.
The ground grailed by concentric circles contiguous to each other. The arcs by fours, all of same radius.
| Bed-plate. | Rest. | Arcs done. |
| 0 | ½ ¾ 1¼ &c. (for grailing) | |
| B 30 | 30 | 12 (16/48) |
(Repeat at three next divisions.)