Metal Ruler 30cm 15cm, 2 Pack Long Shatterproof Rulers Black Straight Aluminum Alloy Rule for School Office Engineering

✅ 【High Quality】Made of hardness aluminum alloy material, this long ruler is sturdy, durable and not easy to break, non-bendable but a little flexible, good for long lasting use. ✅ 【2 Size Available】You will receive 30cm metal ruler and 15cm metal ruler in one package, different size to meet all of different demands and occasions. ✅ 【Centimeter & Inch】We provide the centimeter scales and inch scale for measurement, favored on the same side of the shatterproof ruler to facilitate measurement and records. ✅ 【Detail Design】One conversion table is designed on the back of shatterproof ruler to help you quickly calculate the measurements; The small holes on the top of the metal rule can help you hang it easily for storing. ✅ 【Wide Application】This ruler set is a perfect measuring tool suitable for students, engineers, architects, teachers, designers and other professionals.