Level by Cooke Troughton and Simms Ltd of York
1970-1975
"Ni 007" level
1970
Watts level
1968-1972
Level by Malizard of Paris, late 19th Century
1870-1900
Level used for setting Eccentrics
Level No. II by Carl Zeiss Jena
1928
Clitograph level, French, 1862-1900
1862-1900
Lefebvre type clitograph, French, 1862
1862
Level & clinometer, English, 1860-1910
1860-1910
Plummet level
Level by Benjamin Cole
1750
Small level with compass by G Davis
circa 1825
Miner's level, by W. & S. Jones, mid 19th century
1830-1870
Reflecting plummet level
1829-1900
Compensation level, German, 1874
1874
Combined Abney Level and Clinometer, 1875-1885
1875-1885
Abney level & clinometer, English, 1875-1885
1875-1885
Combined Abney Level and Clinometer, 1882-1887
1882-1887
Abney level & clinometer, English, 1851-1856
1851-1856
Abney type level
1880
Level by Cooke, Troughton & Simms Ltd, 1959
1959
industrial spirit level
N. K.
Optical balance level
1700-1799
28 inch level, by Troughton and Simms, with case
1801-1831
Clitograph, 3rd category, by J. Lefebvre, Paris, France
1862-1900
Optical balance level
1700-1799
level
level
level
level
Watkin's Improved Combined Finder, Level and Telemeter
12-inch level by Troughton and Simms. With tripod
1801-1900
Level by Hall Brothers of Croydon
1941-1950
Bubble level for checking the horizontality of telescope axis
1801-1850
level
30 inch level by Cary
1830