Helix Geometry Set (Model 1)

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)