30cm Transparent Multi-Ruler · Midori

A ruler that opens to 30cm and folds up compactly. This compact ruler measures up to 30cm when opened. It folds up so it doesn't take up much space in your pencil case. It has holes every 10mm, making it easy to mark.

It clicks every 15 degrees to measure angles. Comes with a ground point scale that makes it easy to measure height and depth.