Protractor Triangle-Deluxe - Celestaire, Inc.

2010 Celesta Ire Catalog, PDF, Navigation

These innovative new dividers are a variation of the most popular Ultra Light dividers, and are built by the same German manufacturer. A red LED light

Lighted Dividers

Starrett Digital Protractor - Lee Valley Tools

2010 Celesta Ire Catalog, PDF, Navigation

Helix - Swing Arm Protractor - 180 Degree Rotation

Beginner's Celestial Navigation Kit w/ Astra IIIB Deluxe Full Sextant

Celestaire

These professional triangles from Staedtler Mars feature precision-cut straight edges for pencil work and a beveled center with a cut-out finger lift.

Staedtler Triangle 8 in 45 Degree Clear

Helix - Swing Arm Protractor - 180 Degree Rotation

Lighted Dividers - Celestaire, Inc.

Helix - Swing Arm Protractor - 180 Degree Rotation

Astra IIIB Deluxe Sextant - Celestaire, Inc.

Above Ground Art Supplies

Professional Protractors made from pure clear acrylic to ensure long life and value. Graduations are etched onto the surface to prevent wearing off.

Protractor Acrylic, 180 Degree 6

Helix - Swing Arm Protractor - 180 Degree Rotation

The Plain of Mars – The Quadrangle and the Great Triangle

Proof that a Triangle is 180 Degrees (Review Video)

How to Draw the Impossible Triangle - Really Easy Drawing Tutorial

Triangle Logos Explore Science of Shapes in Branding

5 Special Lines in a Triangle. Altitude, median, and the three…, by Albers Uzila, Geoclid