The best-known non-impact printers are the inkjet printer, of which several makes of low-cost color printers are an example, and the laser printer. The inkjet sprays ink from an ink cartridge at very close range to the paper as it rolls by.
Here is an easy way to find your draw length, simply stand upright with your hands stretched out (hold naturally, do not hyperextend) and measure your arm span from fingertip to fingertip. Take this measurement in inches and divide by 2.5. This will give a good working draw length for your bow.
One method is to use a draw length tool which is a recurve bow with a permanently attached measurement arrow. The archer draws back the arrow while someone checks to see what the measurement is at the front of the arrow rest/riser. This is a decent method if the archers form is perfect. We prefer the wingspan method.