Drawing instrument set

-Drawing 7 brass and steel instrument set, held in a fitted mahogany box with a tray insert, comprising

2 pairs of dividers (brass and steel), each with a removable arm

2 pen attachments

1 pencil attachment

1 extension arm

1 knife (with ivory handle)

1 rolling parallel rule/protractor (ivory and brass)

1 protractor/rule (ivory), inscribed 'THOMAS JONES CHARING CROSS'

Credit: National Maritime Museum, Greenwich, London. Caird Fund.