The 4" 100 MM Digimatic Caliper Measuring Gauge is a digital vernier tool crafted from reinforced fiberglass for durability and precision in measurements. Key Features: 100 mm (4 inches) Measuring Range: Allows for accurate inside or outside measurements. Reinforced Fiberglass Material: Ensures durability and longevity of the gauge. Rapid Reading Digital Display: Facilitated by an exclusively designed thumb grip sliding jaw. Dual Measurement Modes: Provides measurements in both inch and metric units. Resolution: Offers a fine resolution of 0.1 mm for precise readings. Zero Reset Function: Enhances measurement accuracy and ease of use. Storage Case: Comes with a sturdy carrying/storage case for protection and portability. Instructions Included: Ensures user-friendly operation, even for first-time users. This Digimatic Caliper Measuring Gauge is an ideal tool for professionals needing accurate, reliable measurements in a variety of settings.