1. Proportional scale ruler: This tool is not only for architects but also an essential tool for artists. 2. Allows you to transfer an image to the same scale as well as smaller or larger dimensions. 3. If you need to draw the motif in a different size than the reference image, this simple tool will help you draw more easily. 4. Adjustable: By moving the blue tab, the scale can be adjusted from 1:1 to 1:5, suitable for all motif sizes. 5. Durable material: Our proportional scale ruler is made of robust and lightweight plastic, easy to carry and suitable for long-term use. Packaging includes: 1 x proportional scale ruler Specifications: Color: black and purple Size: 26*1.8 cm/10 x 0.7 in Weight: 25 g Material: durable plastic material Usage tips: 1. Use the small end of the ruler to measure the height of the desired object. 2. Transfer the distance from the large end to your drawing surface. 3. If you want to adjust the drawing size, move the blue tab towards the center of the ruler to reduce the transfer size or move it towards the end to enlarge the transfer size. Includes: 1 x proportional scale ruler