Sector signed John Allen
1630-1642
Cylinder watch in pinchbeck inner case
Pocket microscope by Jeremiah Sisson
1752
Surveyor's Level by Joseph Jackson
1735-60
Phrenological head
1821
Stained plaster phrenological bust
1821
Surveyor's pocket sextant.
1795-1805
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
Steward patent telemeter
1908-1912
Watkin type clinometer, British, 1895
1895
Hypsometer with carrying case by Elliott Brothers
1831-1870
Disc Planisphere
1750-1775
Apothecaries scales with glass pan and steel beam
1880-1940
Lovely Llandudno
circa 1910
The Tunnel
1831
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
Double-frame brass sextant.
1810-1826
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