Perascale is a project to draw parallel and perpendicular lines with 100 percent precision. The available products for drawing parallel and perpendicular lines have many drawbacks such as hard to use, not accurate, not easily portable due to big size, high cost, etc. Perascale intends to overcome all these drawbacks at low cost and is fully user-friendly i.e. you can use it the way you want. Perascale is not only limited to drawing parallel and perpendicular lines but it can perform many tasks such as drawing arcs, circles of different lengths, measuring angles, etc. Thus it can replace many instruments alone, such as protector, ruler scale, mini drafter, roller scale, set square, etc. It is compactable and it also help us to save both time and money.