The Mitutoyo Digimatic Holtest internal micrometer interchangeable head sets include one display unit and different-sized measuring heads. This set delivers a wide range of accurate internal dimension measurements that is cost efficient. The Mitutoyo Digimatic Holtest internal micrometer non-interchangeable head sets include different-sized individual gages.

The Mitutoyo Digimatic Holtest internal micrometer utilizes three anvils and contact points for self-centering, precision measurements of the inside dimensions of bores. The Mitutoyo Digimatic Holtest digital internal micrometer features self-centering anvils evenly spaced at 120° with contact points coated in Titanium Nitride (TiN) to provide accurate, sensitive measurements that are highly durable. Precision-machined gears ensure reliable, repeatable measurements that are shown on a large, easy-to-read LCD display in an impact and water resistant housing. The ratchet stop mechanism of the Holtest provides a constant measuring force on the hardened-steel spindle to ensure accurate, even measurements.

• Titanium-coated measuring pins provide excellent durability and impact resistance and allow the instrument to measure right to the bottom of a blind hole
• Digimatic Holtest is equipped with a digital display for easy readability
• ABS (absolute) and INC (incremental) measuring modes are supported for maximum efficiency
• Digimatic Holtest is compatible with statistical process control systems and measurement support systems
• Digimatic Holtest can memorize two preset values for the datum point
• Function lock key prevents changing the datum point accidentally
• Three-point design ensures self-centering action for stable measurements in the range above 8mm bore diameter
• Bore micrometers fitted with the constant-force ratchet enable consistent measurements with minimal operator variation

• Sets available with interchangeable heads or individual gages
• Interchangeable sets include one display unit and different-sized measuring heads
• Non-interchangeable sets include different-sized individual gages
• Set available in Metric and Inch models
• All sets include spanner(s), hex wrench, screwdriver
• Titanium-coated measuring pins provide excellent durability and impact resistance
• IP65 protection rating
• Measurements can be made close to the bottom of a blind hole
• SPC output function allows for quick and easy data management in real time
• Functions include Zero/ABS Setting, Data Hold, Data Output, Function Lock, 2 Presets, and inch/mm conversion (on inch/metric models only)
• Alarms: Low Voltage, Counting Value Composition Error, Battery Replacement
• Two preset values can be stored as reference points
• Scale on thimble and sleeve is laser etched for easier reading in all conditions
• Holtest up to 100mm / 4in diameter measurements - supplied in a fitted plastic case
• Holtest over 100mm / 4in diameter measurements - supplied in a fitted wooden case