Pair of seventeenth-century dividers
1600-1699
Marquois scales
drawing instrument sets; dividers (compass)
Set of drawing instruments in mahogany case
Semicircular protractor
Pair of compasses in case
Gunner's calliper in electrum and ivory
1816-1850
Boxwood Sector, 1680-1720
1680-1720
Twelve - inch scale in case, by "Donkin, London"
Plotting scale
1876
Plotting scale
1876
Plotting scale
1876
One of three 12 inch scales of equal parts by Elliott
One of three 12 inch scales of equal parts by Elliott
Brass, 12-inch Gunter scale by Henry Sutton
1652
Rectangular drawing instrument in brass
1865
Callipers (c. 1800)
1800
Marquois universal parallel scale, 1796 or 1797
1796-1797
Plotting scale
1876
Plotting scale
1876
Plotting scale
1876
Plotting scale
1876
Plotting scale
1876
Plotting scale
1876
Plotting scale
1876
"Keith's Improv'd Scale"
Panmetron, "universal scale" for measurement and calculation invented by James Jordan
1823
Patent protractor in form of set square
1885-1895
Standard 6" diagonal scale in case; brass 6 7/8" x 3 7/16" screwed by 4 screws to mahogany base with a mahogany cover
Protractor with plummet clinometer
1876
Semi-circular protractor
Plotting scale
1876
Trigonometer serving as protractor and parallel rule
1902-1920
Brass protractor with two blades for setting out and measuring angles
1740-1749
Circular protractor
Protractor and scale
Circular protractor 7 7/8 inch
1751-1773
Combination dividers
1772-1795
Gauger's scale; boxwood; 2 foot
1808-1844
Drawing pen for red ink
1876
Lithographic drawing pen
1876
Protractor, silver 2 1/16 inches diameter
1740-1760
Steel drawing pen
1876
"Best" patent enlarging and reducing scale made by W.F.Stanley
Six inch protractor
Steel dividers by W and C Wynn
1787-1899
Gunter's scale, early example, boxwood, 2' long
Protractor scale
1876
Gunner's rule incorporating Brigadier Borgard's Scale for English Weight & Foot Measure
Equarrimetre, form of rectangular protractor with sliding cursor
1918-1922