Proportional scale divider: The proportional scale divider tool can align the desired subject in the small end of the divider and transfer the spacing of the larger end to your drawing surface.Easy to use: material Proportional Scale Divider, Drawing Tool for Enlarging/Reducing, Zoomarlous Proportional Scale Divider Drawing Tool, Drawing Tool for Artists for Artist Adjustable Plastic Adjustable Scale Divider Drawing Tool: by moving the blue tab, the scale can be adjusted by 1: 1 to 1: 5, adjusted for any subject size.drawing kit Package includes: 1 x Proportional Scale Divider. Proportional Scale Divider: The proportional scale divider tool can align the desired subject in the small end of the divider and transfer the spacing of the larger end to your surface drawing. description: The proportional scale divider tool is not only for architects, but also a necessary tool for artist. The tool allows you to transfer an image at the same scale as well as smaller or larger dimensions. If you need to draw the subject in a different size from the reference image, the simple tool will help to draw more easily. Color: black. Size: 25*1.57cm/10 x 0.7inch Material: durable plastic material Measurement Tips: 1. Use the small end of the divider to measure the height of the desired object. 2. Transfer the large end spacing to your drawing surface. 3. If you want to change the design size, move the blue tab towards the middle of the divider to reduce the transfer size, or move the blue tab towards the end to enlarge the transfer size.