Measurement

UltraFlex™ Safe-T® 12" Ruler

A 12" or 30 cm. ruler in 6 that can be twisted and rolled to measure curved surfaces. Returns to it’s flat shape. Color varies (no color choice). More.

Mastering the World of Measuring with the Master Ruler

Activities correspond with the Master Ruler (TB21634CQ). 24 pages. More.

Ultraflex™ Safe-T® 12" Ruler: Set of 12

A 12" or 30 cm. ruler that can be twisted and rolled to measure curved surfaces. Returns to its flat shape! Includes two each of the following colors: red, green, blue, orange, yellow, and purple. More.

Master Ruler®

This transparent, flip-and-measure ruler boasts five rulers in one! Each clear color-coded layer measures a different fraction of an inch, building on a 1" base, with 1/2", 1/4", 1/8", and 1/16" increments and index tabs ... More.