Unlike regular dividers, proportional dividers have points at both ends. A screw and nut slide along a slot within the legs to allow the instrument to be opened into an "X" shape. Learn more
How to Draw Anything - Drawing accurately - Proportional Dividers - Jason Morgan
Dividers Smithsonian Institution
Proportional Divider Artist Drawing Tool for Artists by Pixiss Professional Compass Caliper Scale Divider Drawing Supplies, Drafting Tools, Projector or Camera Lucida Alternative
Early Ten inch DIETZGEN Proportional Dividers in Original Case - 76397
Classification of Calculating Aids and Related Instruments
Proportional Divider for sale
Proportional Dividers Smithsonian American Women's History
Proportional Divider Artist Drawing Tool for Artists by Pixiss Professional Compass Caliper Scale Divider Drawing Supplies, Drafting Tools, Projector or Camera Lucida Alternative : Arts, Crafts & Sewing
How to Draw Anything - Drawing accurately - Proportional Dividers - Jason Morgan
German silver and steel. It has a geared proportional adjustment for micrometer-like accuracy.
Eight inch “Geared” Proportional Dividers by POST GERMANY in Original Case - 82192
Proportional Divider The Best Keep Secret to Improve Your Drawing
Proportional Divider for sale
Dividers Smithsonian Institution