• Optional extension rod allows for measuring deep holes
• 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)
• Alarm: Low Voltage, Counting Value Composition Error, Battery Replacement
• Scale on thimble and sleeve is laser etched for easier reading in all conditions
• IP65 protection permits use in environments exposed to cutting oil, dust, etc. Anti-corrosion treatment is required after use
• Holtests up to 100mm/4" diameter measurements supplied in a fitted plastic case
• Holtests over 100mm/4" diameter measurements supplied in a wooden case

The Mitutoyo Digimatic Holtest digital internal micrometer features self-centering anvils evenly spaced at 120-deg. 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 holtest’s ratchet stop mechanism provides a constant measuring force on the hardened-steel spindle to ensure accurate, even measurements.