Parallel rule on brass mounts
Boxwood Everard rule signed B. Martin
Ivory rule
Two Wooden rules showing girth
Two double sided inscribed rules
1815
Boxwood rule
Mapmaker's quadrilateral rule
Boxwood rule by W.F. Stanley
6" and a 12" No 350 stainless steel rule
Brass rule used in making planispheres and maps
1808
Wooden foot rule, farmers staff
Section line ruler
Metal Rule
Slide rules
1790-1819
Wooden rule of trigonometric functions
Rule from Kew Pattern Unifilar Magnetometer
Hemmi 'Sun' (4-inch) slide rule
1950-1960
Metal Rule
Conversion rule for shilling per quarter and foreign prices
4 ft. coachmaker's rule
Near-point rule
Rule, case and box for slide rule
Foot rule (folding to 3") with sliding brass calliper
circa 1827
wooden rule
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
British alphabet written on a rule
Boxwood rule, with integral bass encased spirit level
6" bellmetal rule engraved "Joseph Whitworth
1850
Brass straight-edge, bevelled one side
1790-1819
Slide rule
1790-1819
Double folding rule
1790-1819
One two fold rule 2 ft
Two fold rule 18", with folding extension to 24”
1790-1819
Half-metre rule
1900-1983
Atmospheric Diffusion slide rule in case, Met O Scientific Paper No 24, Met O 774 and inscribed 'tag'
BTM Rule for measuring number of cards in a pile
A 9" Combination set of ,square, level protractor and rule
Half-metre rule
1900-1983
Half-metre rule
1900-1983