Carpenter's slide rule
1861-1910
2-Foot Rule
1855-1865
Folding Rule
1910
Double folding boxwood foot rule, calliper with vernier scale one end
1900-1920
Folding foot-rule with scales, 1780-1790
1780-1790
Folding rule
1680-1699
Carpenter's sliding joint-rule by I Trafford
1772
Folding ruler from neurosurigcal instrument bag
Double folding boxwood yard rule
1900-1920
Carpenter's joint rule
1659
Folding silver ruler, signed 'I. Rowley feci" and wooden shagreen-covered case
1697-1728
One foot folding carpenter's rule, brass, c. 1700
1698-1703
Fourfold boxwood rule
Single folding boxwood six inch rule
1900-1920
folding rule
1782-1789
Folding 1 metre wood measure, marked with Rheinland inches
Folding measure, one metre
Single folding boxwood metre rule
1900-1920
Double folding boxwood yard rule
1900-1920
Folding measure, one metre
Triangular wooden rule with plumb line
Folding measure, one metre
Brass folding graduated conversion rule
1798-1803
Brass fourfold calliper rule
Single folding boxwood foot rule
1900-1920
Folding rule in canvas case
1890-1909
Folding Rule
1885-1895
Folding measure, "Norge" inches and centimetres
Folding Rule
1875-1885
Folding rule
Folding Rule
1915-1925
Folding 1 metre wood measure, marked with Baden inches
Folding/Slide Rule
1885-1895
Board of Trade standard folding metre
Folding measure, one metre
Folding measure, one metre
Three-foot folding rule with logarithmic slide
1752
Carpenter's folding rule, 2 ft, c. 1900
1900
Folding type carpenter's measuring rule.
Unknown