Caliper Ballpoint Pen

This product is both a vernier caliper and a ballpoint pen, which can write and measure for students. The cute vernier caliper pen is easy to write, quick to use, and will not drag. It only needs a little pressure to complete clear lines. It is suitable for all ages and is suitable for back-to-school use. It is very suitable for school, office and home use. A great gift for your children, friends or personal collection. It is a special gift for architects, contractors and engineers.