Proportional Dividers Smithsonian Institution

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

Dividers Smithsonian Institution

Mathematical Treasures: Smithsonian National Museum of American History Object Groups

National Museum of American History

Proportional Divider - Proportioner

For sale is a very nice pair of vintage ALVIN 8 inch proportional dividers #949 made in Germany. The dividers are made of nickel silver and are

ALVIN #949 PROPORTIONAL DIVIDERS 8 Made in Germany original case drafting drawing architecture tool

Proportional Divider for Facial Feature Positioning - Amdall Gallery

Proportional Divider for sale

2001 BRIDGE CITY TOOL WORKS PD-11 Proportional Divider in Original Box – Jim Bode Tools

Dividers Smithsonian Institution

Proportional Dividers by Kern Smithsonian American Women's History

These are not common, and I don't know why. Dog legs don't lose accuracy when sharpened like straight dividers. They can also stand on their points,

RARE! K&E 11 inch Geared German Silver Dog Leg Proportional Dividers - 76388U

Antique c1850 Proportional Caliper Dividers Mathematic sculpture draughting tool