Safety Compass adjusts to draw circles up to 12"/30cm diameter and 6" Bow Divider made of brass with a satin nickel finish, includes a tube of spare leads.

PINPOINT ACCURACY -- Measure angles to the nearest degree or to the nearest 5 degrees using the black markings around the circular pivot.

PINPOINT ACCURACY -- Measure angles to the nearest degree or to the nearest 5 degrees using the black markings around the circular pivot.

Ball Bearing Compass creates accurate circles up to 12" in diameter.

Features positive pencil lock

Accurate circles up to 12" in diameter

Positive pencil lock

Positive pencil lock

Creates accurate circles up to 12" in diameter

Easy grip top for firm control

Easy grip top for firm control

BIG SIZES FOR BIG CONCEPTS -- The compass' legs measure 17" long. It holds markers and chalk easily. Use this math tool on whiteboards or chalkboards to ensure a whole class can see!

BIG SIZES FOR BIG CONCEPTS -- The compass' legs measure 17" long. It holds markers and chalk easily. Use this math tool on whiteboards or chalkboards to ensure a whole class can see!

Clear design allows for easy viewing

Constructed of quality plastic

TEACH STEM -- This jumbo tool ensures easy demonstration of math, engineering and geometry concepts. Use it to teach measurements, angles and shapes.