Road tracer type level with target, British, 1923-1927
1923-1927
1923-1927
1941-1950
1840-1860
1926-1929
circa 1950
1905-1915
1880-1885
1946
1925-1929
1820-1829
1841
1946
1841
1957
1826-1866
1926-1929
1826-1866
1840-1850
1745-1755
1951-1960
1891-1901
1957
1946
1841
1840-1850
1880-1885
1905-1915
1826-1866
1946
1923-1927
1820-1829