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Description: | Square signed "J.Ramsden, 1757", this square belonged to Jesse Ramsden, F.R.S. the famous mathematical instrument maker, and was probably made by himself when he was 22 years old, The brass half is scored all over with letters, figures, etc, where he has tried his graver from time to time before using on the work in hand (The steel rule is 8" x 1" and the brass 4 1/4" x 1 1/8") | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | set squares squaring drawing instruments | Temporal: | 1757 | Source: | Science Museum | Creator: | Ramsden, Jesse | Identifier: | 1954-326 | Go to resource |
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