Mitutoyo 468-261 | Digital Holtest 3-Point Bore Micrometer | 0.275–0.35 in (6.985–8.89 mm)
The Mitutoyo 468-261 is a Series 468 Digimatic Holtest three-point internal micrometer designed for accurate measurement of small internal diameters. It features a .275-.35" (6.985-8.89 mm) measuring range, 0.00005" / 0.001 mm resolution, inch/metric display, and Digimatic data output. The three self-centring measuring anvils provide reliable bore measurements, while TiN-coated contact points offer durability for demanding inspection applications. Genuine Mitutoyo from General Tech, authorised distributor in Saudi Arabia.
Part No. 468-261
Call +966 531 321586 for pricing, stock availability and quotation.
The Mitutoyo 468-261 uses three measuring anvils positioned at 120° to self-centre inside the bore, helping provide accurate internal diameter measurements without the rocking technique required with conventional two-point bore gauges. The TiN-coated contact points are designed for durability and can measure deep into blind holes. A ratchet stop provides consistent measuring force, while the large digital display provides 0.00005" / 0.001 mm resolution with inch/metric switching. Digimatic data output allows measurements to be transferred to a PC, data processor or SPC system for efficient inspection and data collection.
Key Benefits
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Self-centring three-point contact for accurate bore measurement
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.275-.35" (6.985-8.89 mm) measuring range
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0.00005" / 0.001 mm resolution
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TiN-coated contact points for durability
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Ratchet stop for consistent measuring force
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Inch/metric display with Digimatic data output
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Suitable for blind-hole measurements
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Genuine Mitutoyo supplied by an authorised distributor in Saudi Arabia
Call +966 531 321586 for pricing, stock availability and quotation.
Who This Product Is Best For
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Machine shops inspecting small bores, bushings and cylinders
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Quality control teams requiring repeatable internal diameter measurements
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Manufacturers measuring drilled and bored components
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Inspection applications involving blind holes
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Quality teams transferring measurements to SPC and data collection systems
How to Specify & Install It
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Set the origin using a setting ring with a known diameter.
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Clean the measuring anvils and position the head squarely with the bore axis.
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Insert the micrometer into the bore and turn the ratchet stop until it clicks, allowing the anvils to self-centre.
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Read the measurement on the digital display or transfer it through the Digimatic data output.
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For critical measurements, check at multiple depths to identify taper or ovality.
Frequently Asked Questions
How does the Mitutoyo 468-261 measure internal diameters?
Three measuring anvils positioned at 120° contact the bore simultaneously and self-centre to provide an accurate internal diameter measurement.
What is the measuring range of the 468-261?
The measuring range is .275-.35" (6.985-8.89 mm).
What resolution does it provide?
It provides 0.00005" / 0.001 mm resolution.
Does the 468-261 have data output?
Yes. The Digimatic data output allows readings to be transferred to a data processor, PC or SPC system.
Does it measure in both inch and metric?
Yes. The instrument supports inch/metric measurement and display.
Do I need a setting ring?
Yes. A setting ring is used to establish the origin accurately. Setting rings are optional accessories and can be quoted with the micrometer.
Should I choose the 468-261 or 468-262?
The 468-261 covers .275-.35" (6.985-8.89 mm), while the 468-262 covers .35-.425" (8.89-10.795 mm). Select the model based on the internal diameter you need to measure.
Can the Mitutoyo 468-261 be calibrated?
Yes. General Tech Saudi can arrange calibration services for dimensional measuring instruments.
How should I care for the instrument?
Clean the measuring faces after use and store the micrometer in its case away from heat, moisture and coolant. Regular calibration is recommended for inspection applications.
Is genuine Mitutoyo available in Saudi Arabia?
Yes. General Tech is an authorised Mitutoyo distributor in Saudi Arabia.
Call +966 531 321586 for current pricing, stock availability, lead time and quotation.
