Whiteboard Mat For Sketch Kit, Roll out this mat for an instant, durable, washable canvas. Provides a 100cm x 200cm space for large-scale drawings. Works with Dash, Cue, and Sketch Kit.
Double Convex round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, for educational uses, Size: 50mm focal length, 2in diameter and 3.5mm thick