Marquois scales

Mathematics

Set of Marquois scales for drawing parallel lines

Mathematics

1900-1930

Metal square (sides 6" x 4 3/4") engraved "Lund's

Mathematics

Bing's "Circular Square"

Mathematics

Wooden scale ruler, stamped "Captain Haldane's Military Scales"

Mathematics

1839-1865

Two mounted "Circular Squares"

Mathematics

Marquois scales in boxwood (two straight edges and

Mathematics

1876

Marquois scales, military pattern (a set square an

Mathematics

1876