Boxwood Everard rule signed B. Martin
Two double sided inscribed rules
1815
Parallel rule on brass mounts
Ivory rule
Two Wooden rules showing girth
Brass rule used in making planispheres and maps
1808
Boxwood rule
Section line ruler
6" and a 12" No 350 stainless steel rule
Mapmaker's quadrilateral rule
Boxwood rule by W.F. Stanley
Metal Rule
Wooden foot rule, farmers staff
Wooden rule of trigonometric functions
Metal Rule
4 ft. coachmaker's rule
Conversion rule for shilling per quarter and foreign prices
Conversion rule for Amsterdam currency to others
wooden rule
Near-point rule
Rule from Kew Pattern Unifilar Magnetometer
Foot rule (folding to 3") with sliding brass calliper
circa 1827
Slide rules
1790-1819
Hemmi 'Sun' (4-inch) slide rule
1950-1960
British alphabet written on a rule
Currency conversion rule inscribed "All Germany and Switzerland"
Rule, case and box for slide rule
One 2 ft. Patternmaker's rule 1867
1867
Currency conversion rule for France, Spain, Portugal and Italy
6" bellmetal rule engraved "Joseph Whitworth
1850
Boxwood rule, with integral bass encased spirit level
Brass straight-edge, bevelled one side
1790-1819
Slide rule
1790-1819
Double folding rule
1790-1819
A 9" Combination set of ,square, level protractor and rule
One two fold rule 2 ft
1926
Half-metre rule
1900-1983
Two fold rule 18", with folding extension to 24”
1790-1819
BTM Rule for measuring number of cards in a pile
Half-metre rule
1900-1983
Atmospheric Diffusion slide rule in case, Met O Scientific Paper No 24, Met O 774 and inscribed 'tag'
Half-metre rule
1900-1983