- Dual function design: a precision vernier caliper paired with a gel ink pen, supplied as a 2-piece set. The caliper provides accurate measurements and the gel pen enables quick marking of measured points on your workpiece. - Metric measurement range: 10 cm total range, with readings in millimeters up to 100 mm. Clear graduations support precise measurements. - Multifunctional use: suitable for a variety of measuring tasks and quick layout work. The two-piece design keeps measurement and marking tools together for convenient use. - Readiness and reliability: provides consistent measurements to support quality checks, part fitting, and layout tasks in daily workspace or hobby projects. - Portable and convenient: compact two-piece construction allows easy storage and transport in a toolbox or pocket. - Key attributes to note: function includes measurement and marking capability, metric range up to 100 mm, two-piece design, and emphasis on precision in readings. - 2-3 practical use scenarios: 1) Small part assembly: measure a component to verify fit, then use the gel ink pen to mark the measured dimension directly on the part for quick reference during assembly. 2) Hobby modeling or crafts: check part dimensions against design specifications and annotate tolerances or notes on the material with the pen. 3) Quick layout tasks in woodworking or metalworking: measure spacings or offsets and mark lines or reference points on the workpiece for cutting or drilling.