Review on 📏 ZZTX Stainless Steel Straight Measuring Tool by Mark Turner

Rulers are made of good material and they all have at least one really good ruler. The markings are legible and accurate. They feel sturdy and don't flex too much. They are really well packaged in individual plastic sleeves. The problem with them is the calibration. They show two factory calibration steps: cropping at the zero short edge and smoothing one of the long edges. Half of my rulers were too long (more than 0.01mm) and needed to be filed. All but one of my rulers had a slightly rounded corner on the calibrated edge, so only one side was usable. However, zero calibration can be easily performed with a file, leaving a straight edge accurate to measurement and straight in both metric and inch scales. Markings on each side. You can't ask for more at this price.