This vintage Pro Co Rule drawing ruler is a versatile and professional tool kit for artists and crafters alike. Made in the USA, this unit comes with a variety of functions including a rollerball pen, pencil sharpener, and ruler guides. It is perfect for precise drawing and lettering, and is ideal for use with a variety of drawing supplies. The brand is well-known for its quality and durability, making it a reliable choice for any artist. This unit is a great addition to any art supply collection and is sure to enhance your drawing experience.