300mm Professional Architect Three-edged Ruler 3 Color-Coded Grooves Available with Protective Cover

Features:

Made from quality plastics material, dimensionally stable, offers high durability for an incredible lifelong performance.
With color coded grooves you can effortlessly find the desired scales in a blink. 
The grooves of three sides has different colors, green, red, and yellow, easy for you to distinguishing different faces and different proportions.
High accuracy, measure architectural drawings accurately, and read the measurements easily with appropriately sized markings.
The etched markings on scale ruler help eliminating the risk of rubbing away from the scale after long time use.
Perfect measurement tool for any architect, draftsman, engineer or student.

Specifications:

Name: Ruler
Material: Plastics
Item size: 327 * 26 * 22mm / 12.87 * 1.02 * 0.87in
Item weight: 42g / 1.48ounce
Package size: 340 * 33 * 30mm / 13.39 * 12.30 * 1.18in
Package weight: 64g / 2.26ounce

Package includes:

1 * Ruler