Pair of seventeenth-century dividers
1600-1699
Navigator's rule with Gunter's scale
drawing instrument sets; dividers (compass)
Protractor and scale
drawing instrument sets; dividers (compass)
Semi-circular brass protractor by Heath and Wing
1751-1773
Rectangular protractor and plotting scale
1825-1830
Wooden scale ruler
1839-1865
Marquois scales
Stanley 6-inch plain drawing pen
1876
Brass, 12-inch Gunter scale by Henry Sutton
1652
Boxwood scale
1800-1860
Combination dividers
1772-1795
Plotting scale
1876
Stanley's 5-inch improved drawing pen
1876
Lithographic drawing pen
1876
Stanley's 5-inch improved drawing pen
1876
Triangular ivory scale
Semi-circular protractor 12-inch
1720-1753
drawing instrument sets; dividers (compass)
Protractor scale
1876
Plotting scale
1876
Plotting scale
1876
Section pen
1876
Rectangular protractor for nautical use
1906
Plotting scale
1876
Plotting scale
1876
Plotting scale
1876
Steel drawing pen
1876
Rectangular protractor and plain scale
1800-1819
Plotting scale
1876
Plotting scale
1876
Protractor scale
1876
Plotting scale
1876
Rectangular protractor
Gunner's callipers, English pattern, by M Berge
1800-1819
Plotting scale
1876
Drawing pen for red ink
1876
Plotting scale
1876
Plotting scale
1876
Plotting scale
1876
"Keith's Improv'd Scale"
Plotting scale
1876
Circular protractor
1753-1785
3-foot brass scale
1851-1876
One curve (guide) pen
1876
Proportional plotting scale with cursor
Plotting scale
1876
Plotting scale
1876
Plotting scale
1876