2-Foot Rule

Mathematics

1855-1865

Carpenter's slide rule

Mathematics

1861-1910

Fourfold boxwood rule

Industrial Metrology

Rabone boxwood folding rule, 2 ft. long measuring

Hand and Machine Tools

Folding Rule

Mathematics

1915-1925

Folding rule

Weighing & Measuring

1680-1699

Carpenter's sliding joint-rule by I Trafford, Oxfo

Mathematics

1772

Folding Rule

Mathematics

1910

Folding measure, one metre

Weighing & Measuring

Brass folding graduated conversion rule

Weighing & Measuring

1798-1803

Folding measure, "Norge" inches and centimetres

Weighing & Measuring

Double folding boxwood yard rule

Weighing & Measuring

1900-1920

Carpenter's joint rule, in pearwood, signed "Richa

Mathematics

1659

Brass fourfold calliper rule, with symmetrically curved legs

Mathematics

Folding measure, one metre

Weighing & Measuring

Folding measure, one metre

Weighing & Measuring

Double folding boxwood yard rule

Weighing & Measuring

1900-1920

Double folding boxwood foot rule, calliper with vernier scale one end

Weighing & Measuring

1900-1920

Single folding boxwood six inch rule

Weighing & Measuring

1900-1920

Triangular wooden rule with plumb line

Mathematics

Folding foot-rule with scales, 1780-1790

Weighing & Measuring

1780-1790

Folding silver ruler, signed 'I. Rowley feci" and wooden shagreen-covered case

Weighing & Measuring

1697-1728

Folding rule in canvas case

Wellcome (general)

1890-1909

Folding/Slide Rule

Mathematics

1885-1895

Folding ruler from neurosurigcal instrument bag

Surgery

One foot folding carpenter's rule, brass, c. 1700

Mathematics

1698-1703

Single folding boxwood foot rule

Weighing & Measuring

1900-1920

Single folding boxwood metre rule

Weighing & Measuring

1900-1920

Folding 1 metre wood measure, marked with Baden inches

Weighing & Measuring

Folding measure, one metre

Weighing & Measuring

Folding 1 metre wood measure, marked with Rheinland inches

Weighing & Measuring

Folding measure, one metre

Weighing & Measuring

Board of Trade standard folding metre

Weighing & Measuring

Folding Rule

Mathematics

1885-1895

Folding rule

Mathematics

1875-1885

Carpenter's folding rule, 2 ft, c. 1900

Industrial Metrology

1900

Folding type carpenter's measuring rule.

Hand and Machine Tools

Unknown