... board, multifunctional and convenient for education, drawing, design and office work. Professional manufacturer of drawing board in China. Parallel ... square, protractor and 10x12cm square.With magnetic tape, can take out the ruler for drawing different length. Convenient single-handed ... clients' such as STANLEY, FACOM, WALMART, EMPIRE, TRUPER, OFFICE DEPOT, STAPLES etc.5. With competitive price as well ...