# Mathematics

## On Display

Ready reckoner, boxwood weighted with brass, for gross and tare weights of ship's cargoes, engraved "Robert Ludgate, Custom House, London, 1807". Tare is the weight of the packaging or container. Scales are given for finding the gross weight if the

A single surface glass vessel made by Alan Bennett in Bedford, 1995. It consists of a five-layered sphere, extension of the three Klein bottles above to infinity which when cut gives a pair of single-twist Mobius strips. A Klein bottle is a surface w

A single surface glass vessel made by Alan Bennett in Bedford, United Kingdom. It consists of three Klein bottles in a column which when cut form a pair of single-twist Mobius strips. A Klein bottle is a surface which has no edges, no outside or insi

A single surface model made by Alan Bennett in Bedford, 1995. This 'way-in-way-out vessel' is equivalent to two Klein bottles, one inverted, sealed together back-to-back. When cut it forms two pairs of single twist Mobius strips. A Klein bottle is a

A single surface glass vessel made by Alan Bennett in Bedford, 1995. It consists of three columns of three Klein bottles interconnected, which when cut form three pairs of single-twist Mobuis strips, one of each pair being seperate, the other of each

A single surface glass vessel made by Alan Bennett in Bedford, 1995. It consists of a five-layered sphere with added access routes which when cut produces a pair of single-twist Mobius strips. A Klein bottle is a surface which has no edges, no outsid

Nine inch brass sector, by Adams; engraved "Improv'd and made by Geo. Adams, Mathm. Inst. Maker to His Royal Highness, George Prince of Wales, London", in fishskin case. Sectors were used in calculations involving proportion. They contain logarithmic

Carpenter's 2-foot folding rule in boxwood with logarithmic slide, made by James Rabone & Sons, Birmingham, mid to late 19th century. This is a standard carpenter's rule of the period and includes scales for calculating the volume of wood and the p

Set of mathematical drawing instruments by G.Adams, in Sheraton case, oak and mahogany, mid 18th century. The case contains a sector, parallel ruler, pair of callipers, rectangular protractor, curve drawing instrument and compasses and dividers.

Gunners callipers, 6 inch by H.Gregory, brass 18th century. These callipers ere used for measuring the diameter of cannon balls, or by crossing the arms, the bore of a cannon..