Whiteboard Compass

thingiverse

Hold this device above a whiteboard or chalkboard, ensuring your dry-erase marker or chalk is within easy reach to create flawless circles at will. It effortlessly achieves up to a 9-inch radius in one-inch increments and 24-centimeter marks in equal centimeters. To assemble the body of this ingenious compass tool, simply snap together its two carefully crafted pieces with an elegant opposing dovetail joint once you've securely attached the adjustable slider first. Be sure to fit a suction cup-equipped mounting base into the conveniently sized 0.5-inch hole for stable deployment.