Ruler
1949
Thornton Ruler
1920-1930
Ruler
1939
Dancer Ruler
1860-1870
Box of "engine divided" rulers
Ruler
1955-1965
Thornton 12-Inch Rule
1960-1965
Steel Rule
1900
Ruler
1875
Ruler, wooden, marked 'Armstrong'
Ruler
1860-1880
Halden Ruler
1870-1900
Twelve-Inch Ruler
1930-1940
Gardner diesel engines Branded ruler
circa 1954-97
Ruler
1917
Gardner diesel engines Branded ruler
circa 1954-97
Sectional ruler
1900-1910
Folding rule
1885-1895
Ruler
1870-1900
Wood and brass ruler, London Brighton and South Coast Railway
Twelve inch ruler
1872
Gardner diesel engines Branded ruler
circa 1954-97
Gardner diesel engines Branded ruler
circa 1954-97
Ophthalmic Rule
1935-1945
Ruler, plastic
German hexagonal section measuring rod, one of four
1695-1715
German hexagonal section measuring rod, one of four
1695-1715
'Days to check 2000' ruler marketing 'Check 2000' tool
1999
Ruler, used by Beyer
1930
German hexagonal section measuring rod, one of four
1695-1715
A.W. Faber ruler
circa 1900
Rulers
1920-1940
Three-Sided Rule
1860-1900
Ruler with markings which oscillate between centimetres and centigrade, inches and farenheit
1970-1985
Ruler from a pocket set of drawing instruments by William Harris of no.47 Holborn
1805-1815
Plastic ruler
1979
German hexagonal section measuring rod, one of four
1715
Metal Rule for Dixie Automatic Can Sealer
Swedish measuring ruler, 28 5/8" long
A.G. Thornton Folding Ruler
1890-1910
Swedish measuring ruler, 26 7/8" long
Ebony ruler, Great Western Railway
1833-1858
Ruler, Great Northern Railway
1857
Boxwood rule
1790-1819
Boxwood Ruler, Great Northern Railway
Wooden 18" ruler, British Railways
Three ivory rulers
Timetable slide ruler
Ruler from Phase 3 Novavax 2019nCoV-302 Vaccine Trial
2020
Scale Ruler, 1/8 and 1/4 scales
1960-1970