
• Ruler body made of high-quality stainless steel, hardened for high dimensional accuracy.
• 4 measurement modes: outside diameter, inside diameter, step, depth.
• 4-button design: power on/off, zero at any position, ABS relative measurement, and metric/imperial conversion.
• Large LCD display for clear and intuitive readings.
• Features direct measurement and comparative measurement functions.
• Locking screw for accurate reading lock.
• Complies with Chinese metrology standards