Wooden rule of trigonometric functions
Metal Rule
Section line ruler
Boxwood rule by W.F. Stanley
Folding printers' rule in ivory by Miller and Richard
Foot rule (folding to 3") with sliding brass calliper
circa 1827
Mapmaker's quadrilateral rule
Two Wooden rules showing girth
Conversion rule for shilling per quarter and foreign prices
Currency conversion rule for France, Spain, Portugal and Italy
Currency conversion rule inscribed "All Germany and Switzerland"
Conversion rule for Amsterdam currency to others
Boxwood Everard rule signed B. Martin
One 2 ft. Patternmaker's rule 1867
1867
4 ft. coachmaker's rule
6" and a 12" No 350 stainless steel rule
Near-point rule
Ivory rule
wooden rule
Metal Rule
Boxwood rule
Parallel rule on brass mounts
British alphabet written on a rule
Brass rule used in making planispheres and maps
1808
Two double sided inscribed rules
1815
Boxwood rule, with integral bass encased spirit level
6" bellmetal rule engraved "Joseph Whitworth
1850
Half-metre rule
1900-1983
Half-metre rule
1900-1983
Half-metre rule
1900-1983