Stanley 1-35-556 line engineering belongs to the class scribe tools that fall under the definition of second-class accuracy. The total thickness of such a measuring device is only 0.8 millimeters, which was made possible through the use of stainless steel for its creation. In this case, the device will not issue patches that are in the process of work often interfere with the right to read the readings that can lead to serious errors in the future or rapid eye fatigue. The indicator has a metric scale division on the basis of 1 mm / 0.5 mm for easy operation in all conditions.