Surveying
1926-1929
Scientific Instruments & Research
1840-1850
Coal Mining
C.1950
1923-1927
1840-1860
Tools of the Trade & Personal Accessories
1745-1755
1891-1901
1946
1957
Weighing & Measuring
1880-1885
1820-1829
1841
1905-1915
1826-1866
1951-1960