Plane-Table Alidade, by Benjamin Scott, English, Early 18th Century |
|
|
| Inventory Number: | 53341
|
| Object Type: | alidade
|
| Persons: |
Benjamin Scott (Maker)
|
| Date Created: | Early 18th century
|
| Place Created: | England United Kingdom Europe
|
| Accession Number: | 1924-0/part
|
| Brief Description: | The alidade has a scale of 20 inches, a diagonal scale of half and quarter inches, and a plain scale dividing inches into 30, 35, 40, 45, 50, 60 parts, with two scales of chords. On the underside are logarithmic scales of numbers, sines and tangents. The sights are alternating slit and thread, sliding onto sockets and fixed by (missing) screws.
|
| Primary Inscriptions: | "B Scott Fecit" on the underside
|
| Provenance: | Presented by Lewis Evans.
|
| Collection Group: |
|
| Material(s): |
Brass
|
| Dimensions: |
| Height |
Width |
Depth |
Diameter |
Unit |
| 509 |
39 |
|
|
mm |
|
Narratives |
|
Permalink: http://www.mhs.ox.ac.uk/object/inv/53341