Isomars Pattern Curve Dimensions- Length: 45 cm , Thickness : 3mm Material: Plastic Colour: Clear The original all in one pattern design tool. This Pattern Maker combines the functions of a graders square with the essential curves required for neck lines, sleeve and trouser crotches. Useful tool for designing textile patterns especially good for sleeves. All in one pattern design tool ideal for professional pattern making, at home or at school.