- Subject
- Print Collection
- Item type
- Object
- Primary inscriptions
- Description of the Rolling Parallel Ruler, Invented by Mr. A. G. Eckhardt, (For which he obtained His Majesty's Letters Patent) And made by P. and J. Dollond, Opticians, in St. Paul's Church-yard. London. Whitchurch sculpt. Pleasant Row, Islington.
- Physical material
- Paper
- Physical medium
- Black ink
- Object type
- Dimensions
- Height: 370mm Width: 480mm
- Inventory No
- 13662
- Accession Number
- 1980-113
Description
Engraving, 4 figs. printed description of rolling parallel ruler invented by A. G. Eckhardt [Pat. Spec. 985 23rd Mar. 1771] made by P. & J. Dollond, with prices alongside.
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