Inside of box lid shows length, area, and volume metric equivalent conversion factors, and various formulas, etc. Box contains: • A protractor for angles • 2 right triangles – one 45/45 degrees and one 30/60 degrees • A 15 cm long ruler • A compass & pencil for circles • Another pencil $5 John Gruber, 613-824-6539, john.gruber@sympatico.ca