Set of mathematical instruments by George Adams, mid 18th century.

Pocket clinometer and square, c 1675-1700.

Pocket clinometer and square in an embosed leather case, c 1675-1700.

Set of buttons engraved with diffraction patterns by John Barton, c 1825.

TY 'Tarantula', 1902.

'Saulmac Lay Figures' to aid figure drawing, 1930s.

Drawing and measuring instruments, 1723.

Mathematical instruments, 1747.

Stephenson's 'Rocket', 1829.

Scale drawing of Nottingham Water Works Engine House, England, 1850s.

Mortice marking gauge c 1850.

Mortice marking gauge.