Set of Napier's bones in boxwood, a device for performing arithmetic, particularly multiplication, invented by John Napier of Merchiston, Edinburgh, who also developed logarithms, 18th century

Excise officer's slide-rule of boxwood, with a slider on each of the four faces, and gauge points on the reverse of one slider, maker unknown, 19th century

Shoefitter's folding foot gauge signed by F.B. Cox

Wire and rope gauge, giving the circumference and diameter of rope or wire held between its jaws

Six-inch boxwood scale with linear scales marked on both sides, maker unknown, early 19th century

Six-inch boxwood sector opening to 12-inches, used for trigonometric calculation, maker unknown

Octant, mahogany frame and index arm, boxwood limb, brass fittings, ivory plate, no box, unsigned, unknown English maker, c. 1750

Divided scale in boxwood signed by Bryson of Edinburgh, 1881

Wine and spirit merchants slide rule, made of boxwood, made by Frank C. Farmar, England c.1900

Carpenters or timber merchants slide rule, hinged with slider in each arm, made of boxwood, made by Blakely, Carlisle Street, Lambeth, London, 1830 - 1850

Octant, ebony frame and limb, brass index arm and fittings, boxwood scale, ivory plate, signed and made by John Urings of London, c. 1760

Brewer's boxwood rule, twenty four inch, by Dring and Fage of London, and owned by John Gough in 1811 and R.B. Smith in 1844

Statue of a female immortal, probably He Xiangu (one of the Eight Daoist Immortals), carved in boxwood: China, Qing Dynasty, 18th century AD

Detachable moulded boxwood stopper for a scent bottle of bone with globular body with horizontal concave indentations to form four sides on the upper part, part of the Ida Pappenheim Collection: possibly South German, 19th century

Scent bottle of boxwood with spherical body with turned circles around the sides and brass neck and calyx at the top, part of the Ida Pappenheim Collection: possibly South German, 19th century

Bottom part of an egg-shaped boxwood container for a vinaigrette, part of the Ida Pappenheim Collection: German, 19th century