grid for a ruler of 4000 millimeters, 400 centimeters, 4 meters. calibration grid. value division 1 mm

400 4000 accuracy black calibration centimeter centimeters chart construction design device division drawing education equipment flat fourthrate geometric geometry graduation graphic grid horizontal illustration inch indicator industrial instrument isolated length line long marking measure measurement measuring meters metric millimeter millimeters nonstandard object outsize precise precision ruler scale sign size symbol tailor tape tool units value vector