This custom NumWorks calculator case combines protection with practical everyday features designed for educational and technical use. In addition to securely protecting the calculator, the case integrates a flat side with built-in measurement graduations, allowing it to be used as a compact ruler for quick and accurate measurements.

The model is optimized for reliable 3D printing, compatible with common filaments such as PLA or PETG, and designed to print without supports or with minimal supports depending on printer settings. Wall thickness and tolerances have been carefully adjusted to ensure durability, impact resistance, and a secure fit while allowing easy insertion and removal of the calculator.

This case is intended for students, teachers, and professionals who want to turn their NumWorks into a compact multifunction tool, combining calculator, ruler, and pen holder in a single, practical accessory.