Road tracer type level with target, British, 1923-1927
1923-1927
1923-1927
1920-1922
1900
1915-1922
1920-1922
1920-1922
1925-1929
1965
circa 1910-circa 1930
1971-1980
1920-1922
1923-1927
1914
1925-1929