Mitutoyo 145-186 Caliper Jaw Inside Micrometer 25-50mm
Mitutoyo 145-186 Caliper Jaw Inside Micrometer 25–50 mm
Call +965 9807 4888 for pricing and stock availability.
Part No. 145-186 | Mitutoyo Series 145
Product Description
The Mitutoyo 145-186 Caliper Jaw Inside Micrometer is designed for accurate measurement of internal dimensions from 25 to 50 mm. Its caliper-style jaws make it suitable for measuring bore diameters, internal grooves, slots and other recessed features that can be difficult to access with conventional measuring tools.
The 145-186 provides ±6 µm accuracy with 0.01 mm graduation. Its carbide-tipped measuring faces provide good wear resistance for repeated dimensional inspection, while the mechanical design eliminates the need for batteries.
The tool uses a locking clamp to secure the spindle position after measurement, making it easier to retain a reading when withdrawing the micrometer from an internal feature. The satin chrome finish on the thimble and sleeve also helps provide clear, readable measurements under workshop lighting.
A suitable setting ring or inside setting standard is required to establish the reference dimension before measurement and is available separately.
Key Benefits
Reach internal features across the 25–50 mm measuring range.
±6 µm accuracy supports precision dimensional inspection.
0.01 mm graduation provides clear metric measurement readings.
Carbide-tipped measuring faces provide resistance to wear.
Caliper-style jaws are suitable for bores, grooves and slots.
Mechanical operation requires no batteries.
Spindle locking clamp helps retain the measured position.
Compact design is suitable for workshop and inspection applications.
Supplied in a protective case for storage and handling.
Who This Product Is Best For
The Mitutoyo 145-186 is suitable for machine shops, maintenance departments, hydraulic and pump workshops, valve manufacturers and quality-control applications where internal dimensions need to be checked accurately.
It is particularly useful for machinists, inspectors and maintenance engineers measuring bores, internal grooves, slots, bushings and other features within the 25–50 mm range.
For smaller measurements, the Mitutoyo Series 145-185 provides a 5–30 mm range.
How to Use
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Set the micrometer against a suitable setting ring or inside setting standard of known size.
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Adjust the micrometer so the reference dimension is correctly established.
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Insert the caliper jaws into the bore, groove or slot being measured.
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Open the jaws carefully until the carbide measuring faces contact the internal surfaces.
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Rock the micrometer slightly to locate the correct measurement position.
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Lock the spindle if required and read the measurement from the thimble and sleeve.
A proper reference standard should be used before measurement to maintain measurement accuracy.
Frequently Asked Questions
What is the Mitutoyo 145-186 used for?
The Mitutoyo 145-186 is used to measure internal dimensions such as bore diameters, internal grooves and slot widths from 25 to 50 mm.
What is the measuring range of the Mitutoyo 145-186?
The measuring range is 25–50 mm.
How accurate is the Mitutoyo 145-186?
The specified accuracy is ±6 µm, with a graduation of 0.01 mm.
Does the Mitutoyo 145-186 use batteries?
No. It is a fully mechanical analog inside micrometer and does not require batteries.
Does the 145-186 require a setting standard?
Yes. An appropriate setting ring or inside setting standard should be used to establish the reference dimension before measurement. The setting standard is available separately.
What is the difference between the Mitutoyo 145-185 and 145-186?
The 145-185 covers a smaller 5–30 mm range, while the 145-186 covers 25–50 mm.
How can I buy the Mitutoyo 145-186 in Kuwait?
Call +965 9807 4888 for pricing, stock availability and delivery information for the Mitutoyo 145-186.
