1. Tools: This product is both a vernier caliper and a ballpoint pen, which can write and measure for students.
2. 0.5MM refill: This ballpoint pen has a 0.5mm blue refill, which creates a better writing experience for you, suitable for writing.
3. Smooth writing: The handwriting of this ballpoint pen is smooth and durable, suitable for writing and taking notes.
4. Applicable occasions: Vernier calipers and ballpoint pens are suitable for offices, schools, woodworking, and homes.
5. Children's gift: This vernier caliper and ballpoint pen have two functions, making it a perfect gift for children.