Isomars Technical Set Square Combo Ruler(Set of 3, Clear)

Isomars Technical Set Squares Combo - Technical Drafting Rulers are combination of 10" and 12" professional triangles made of clear plastic . Set Squares are used in conjunction with straightedge of drawing board to draw accurate angles. 25cm/10"- 45 degrees 30cm/12"-60 degrees Thickness - 2.9 mm Markings on both side in mm/inch. 2. Triangular scale(T4) is a stylish rule suitable for architects. Isomars 30 cm triangular scale is made of white plastic with precision divisions and has color coded sides of red and yellow-1:10,1:20,1:25,1:30,1:40,1:50,1:100,1:200,1:250,1:300,1:400,1:500 . Dimensions are in (cm) and (m) for easier working. Scale rulers are used by architects and engineers to calculate dimension in a blue print or building plan without the use of time-consuming and complicated math equations. 3.Flexible Curve with markings- 12" is a square metal core coated with light blue wear resistant plastic. Marking on both sides and easy to read inch and metric graduations. Instantly adjustable and retains shape without support. Widely use in arts painting, engineering, design, garment and other industries. Perfect for Measuring and Drawing Curve. Raised edges for ink ruling. Size - 30 cm