Helix Geometry Set

Mathematical set features a metal 4" compass that makes circles up to 8" in diameter; wood-cased pencil for use with compass; metal 3-1/2" dividers; plastic handheld pencil sharpener with metal blade; white pencil eraser; Imperial/metric, clear plastic ruler that measures up to 6" (15cm); plastic lettering guide/stencil that features upper and lower-case letters plus numbers and makes 1/2" capital letters; clear 4" plastic semicircular protractor; clear 4" 45/45/90-degree triangle graduated in Imperial and metric; and clear 5" 30/60/90-degree triangle graduated in Imperial and metric. All are neatly packed in a traditional 7" x 2" x 7/8" tin and sleeve that easily fits in your pocket, backpack or pencil box.

• 4" (101.60 mm)
• 5" (127 mm)