Wooden rule of trigonometric functions
Section line ruler
Foot rule (folding to 3") with sliding brass calliper
circa 1827
Metal Rule
Folding printers' rule in ivory by Miller and Richard
Boxwood rule by W.F. Stanley
Mapmaker's quadrilateral rule
Boxwood Everard rule signed B. Martin
Ivory rule
Two Wooden rules showing girth
Two double sided inscribed rules
1815
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
One 2 ft. Patternmaker's rule 1867
1867
Boxwood rule
4 ft. coachmaker's rule
6" and a 12" No 350 stainless steel rule
Parallel rule on brass mounts
wooden rule
Metal Rule
British alphabet written on a rule
Near-point rule
Brass rule used in making planispheres and maps
1808
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
One two fold rule 2 ft
Half-metre rule
1900-1983