Sector signed John Allen
1630-1642
Pocket microscope by Jeremiah Sisson
1752
Phrenological head
1821
Stained plaster phrenological bust
1821
Surveyor's pocket sextant.
1795-1805
Surveyor's Level by Joseph Jackson
1735-60
Two coloured aquatints of hobby horses
1819
Transit telescope
1770
Ear trumpet
1850-1900
Pocket alarm watch in pinchbeck case
1771-1800
Patent telemeter, British, 1910-1920
1910-1920
Pocket-sized spectroscope, cased, by John Browning
Thermometer, glass, Fahrenheit
1801-1900
Patent prismatic clinometer, British, 1810 -1826
1810-1826
Herbert-Smith type range-finder, British, 1912-1916
1912-1918
Set of paint brushes & paint, British, 1875-1901
1875-1901
Drawing of Gass Works
1812
Car clock
1906
Richard Hornsby
1858
Hollow square pyramid
1833-1851
Precision Balance, in mahogany and glass case
1788
Improved Patent Portable Theodolite
1818-1826
Mahogany and brass octant.
1770-1776
Azimuth variation compass, British, 1722-1747
1722-1747
Apothecaries scales with glass pan and steel beam
1880-1940
Steward patent telemeter
1908-1912
Watkin type clinometer, British, 1895
1895
Hypsometer with carrying case by Elliott Brothers
1831-1870
The Tunnel
1831
Lovely Llandudno
circa 1910
Disc Planisphere
1750-1775
Circular watch by William Crayle in the Strand
circa 1660
Brass quadrant with stand and case.
1771
Brass moving wire filar micrometer by J. Sissons
1740-1760
A pair of instruments
1911
Wooden backstaff fitted with artificial horizon.
1730-1735
Box type pocket sextant.
1845-1855
Prismatic magnetic compass, British, 1810-1826
1810-1826
Box type pocket sextant.
1810-1826
Case of silver mathematical drawing instruments by C. A. Schmalcalder
1810-1826
Herbert-Smith type range-finders, British, 1912-1916
1912-1916
Solar microscope with screwbarrel
1750-1775
Optical square for use with telemeter, British, 1904-1911
1904-1911
Prismatic magnetic compass, British, 1810-1826
1810-1826
Tree height measurer, British, 1945-1948
1945-1948
'Range' tape measure, British, 1910-1912
1910-1912
Abney level & clinometer, English, 1875-1885
1875-1885
Plaster phrenological bust, London, England, 1821
1821
Vectis, Lever, steel and ebony
1787-1830