اذا لم تجد ما تبحث عنه يمكنك استخدام كلمات أكثر دقة.
Square root.--Cube root.--The use of formulas.--Time required for drilling, milling and planing.--Pulley and gear drives.--Horse-power of belting.--Change gears for cutting metric threads.--Areas of plane figures.--Volumes of solids.--Specific gravity and weights of bars and castings.--Use of tables of sines, cosines, tangents and cotangents