Techniques of manufacture
Many mathematical instruments were made by dividing and graduating scales, sometimes using a template [2]. Using special-purpose engines some firms specialised in supplying divided scales to the trade [6]. Instruments could also be produced by casting [3], printing [4], or simply working with pen and paper [5].
Other narratives:
Related Objects:
- Inventory No. 29026, "Sector, by John Goodwin, London, c. 1620" [1930-22], Goodwin, John
- Inventory No. 52332, "Astrolabe Template, Persian, 18th Century?" [1969-217A/5]
- Inventory No. 44394, "Mould for a Vertical Sundial, French or German, 1772" [1976-13]
- Inventory No. 44794, "Copperplate of a Sundial with Impression, German, 18th Century" [1924-0/part]
- Inventory No. 44942, "Double Rectilinear Dial, by Giuseppe Toaldo, Padua, 1760" [1957-84/195], Toaldo, Giuseppe
- Inventory No. 52728, "Octant in case with papers, Divided by Spencer, Browning & Rust, London, Early 19th Century" [1932-9], Spencer, Browning & Rust