The Insize Waterproof Digital Outside Micrometer 3101-100A is a precision-engineered instrument designed for accurate external measurement in machining, inspection, and quality control applications. With a measuring range of 75-100mm / 3-4 inch, it is ideal for measuring larger diameters, thicknesses, and outside dimensions with high accuracy.
Built with a rugged waterproof and coolant-resistant design, this micrometer performs reliably in demanding industrial environments exposed to oil, coolant, and moisture. The clear digital display ensures quick and precise readings, while the metric and inch conversion feature allows easy switching between measurement systems.
Equipped with durable carbide measuring faces and a ratchet stop mechanism, it ensures consistent measuring force and long-term accuracy, making it an essential tool for professionals.
Key Features:
• Measuring range: 75-100mm / 3-4 inch
• High precision digital readout
• Waterproof and coolant-resistant construction
• Metric & inch unit conversion
• Zero setting at any position
• Carbide measuring faces for durability
• Ratchet stop for consistent measuring pressure
• Clear LCD display for easy reading
• Suitable for industrial, workshop, and inspection use















