Rolling parallel rule by Elliott Bros
1870-1910
Rolling rule for typewriter spacing
Rolling parallel rule by Dollond with enamel dial
Rolling parallel rule by Cooke
1922-1950
Parallel rule
1876
Field's parallel rule
1876
Parallel rule
1876
Ivory parallel rule, six inch
Parallel rule
1876
Parallel rule
1876
Parallel rule, 6-inch, ivory, rolling type
1876
Boswell's parallel rule
1805-1830
Parallel rule, 18 inch, metal, rolling type
1876
Mechanical parallel rule, brass, in pine case
Thirteen-arm parallel rule
1840-1860
Parallel rule, 18 inch, wood, rolling type
1876
Parallel rule
1731-1770
Parallel rule in bakelite signed `Lund's Rule
1922-1927
Ivory parallel rule, from set of drawing instruments
1839-1900
Parallel Rule
Parallel rule, wood, single parallelogram type
Sliding parallel rule:- 3 foot
Parallel rule
1876
Rolling parallel rule by Stanley in brass
1900-1930
Parallel Rule
Naval parallel rule
1882-1887
Rolling rule with 30cm scale and protractor made by Shinomo
1980-1990
Sliding parallel rule:- 3 foot
Ivory diagonal scale with built-in protractor from set of drawing instruments by Holtzapffel & Co
1839-1900