Credit Card-Sized Multitool for Engineers: This laser-cut pocket tool includes a straight-edge ruler, protractor, and a compass. From lab work to DIY projects, it's the ultimate at-work companion. Metric or inches? No problem. Draft blueprints, calculate angles, and create precise drawings. Perfect for students, professors, engineers, and mechanics. Surprise your boyfriend, dad, or gadget-loving friends with a unique gift. An ideal stocking stuffer graduation gift. Packed With Engineering Reference : Never look up a basic engineering equation, physical constant or unit conversion again. It's not just a ruler; it's your quick-reference while in or on the job. Architects, , and electricians-slip it into your pocket to save time looking up conversions! For Precision Technical Drawings: Always to take a quick measurement or sketch a new design accurately with the ruler, protractor and compass drawing tools. From construction sites to woodworking , this multitool is your centimeter, millimeter, mils and inches ruler with angular precision of 5 degrees. A must-have for engineering, architects, machinists, draftsmen, field engineers and practical ! Never Outgrow It: Reference stays useful for a long career, Give a professional, student or budding young a unique, thoughtful and practical gift for homework to cutting-edge research. Ideal for tech- students, teachers, and DIY enthusiasts. Lasts for a : The laser-etched solid ruler, laser-cut protractor, and the laser-engraved reference lasts forever. Whether you're converting inches to millimeters, PSI to Torr, or measuring angles, it's an every-day carry pocket companion for a . Note:Due to different production batches, there may be slight color difference or variance, which not affect the use. Colour:Black Material:alloy Package Contents: 1 * Metal Engineering Ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.