Scale Ruler/Ruler with Scales kearing scale ruler have 10 different scales,essential tool for engineer and the garment etc,and white plastic. size 1/10&1/15 1/20&1/25 1/30&1/33 1/40&1/50 1/75&1/125 Shanghai Kearing Stationery Co,. Ltd is the specialist and leading manufacturer in this field in China, and she is a high technology products manufacturer confirmed and awarded by Shanghai Science & Technology Committee.Kearing can offer you every kind of Scale Rulers with top quality.