Mitutoyo 145-196 Caliper Jaw Inside Micrometer, 3-4"

Part Number: Mitutoyo 145-196

The Mitutoyo 145-196 caliper jaw inside micrometer measures internal diameters, grooves and slot widths from 3"–4" (76.2–101.6 mm). Its caliper-type jaws enter internal features directly, while carbide measuring faces provide wear resistance for repeated workshop use. With a 0.001" graduation and fully mechanical operation, it provides a battery-free solution for precision internal measurements.

The caliper jaw design makes the Mitutoyo 145-196 suitable for internal grooves, short bores and slots that can be difficult to access with tubular inside micrometers. Its mechanical construction eliminates the need for batteries, making it practical for maintenance work, machine shops and shutdown environments.

Typical applications include bearing housings, internal grooves, slots and short bores. Before measuring, use an appropriate setting standard to establish the reference point. Keep the measuring faces clean and allow the workpiece and micrometer to reach a suitable temperature before taking close-tolerance measurements.

For smaller sizes, the Mitutoyo 145-194 covers the 1"–2" range.

Key Benefits

• 0.001" graduation — clear mechanical reading for internal measurements.

• No batteries — ready for use without electronic power.

• Mitutoyo build quality — hardened, stable construction for workshop applications.

• Wide coverage — 3"–4" range for larger internal features.

• Reaches internal features — caliper jaws measure grooves, slots and short bores.

• Carbide measuring faces — provide resistance to wear from repeated contact.

Ready to order the Mitutoyo 145-196? Call or WhatsApp +965 9807 4888 for a fast quote.

Who This Product Is Best For

• Machinists measuring bearing housings and other internal features.

• Inspectors checking internal groove and slot widths.

• Maintenance teams requiring a battery-free inside micrometer.

• Gearbox, pump and valve rebuild workshops.

• Buyers comparing mechanical caliper jaw micrometers with digital inside micrometers.

How to Use

1. Check the zero or reference setting using a suitable setting standard of known size.

2. Insert the caliper jaws into the internal feature.

3. Rock the micrometer gently to locate the true maximum measurement.

4. Turn the thimble until the measuring faces make proper contact with the walls.

5. Read the measurement from the sleeve and thimble graduations.

Frequently Asked Questions

What range does the Mitutoyo 145-196 caliper jaw inside micrometer measure?
It measures 3"–4" (76.2–101.6 mm) with a 0.001" graduation.

What is a caliper jaw inside micrometer used for?
It is used to measure internal diameters, groove widths and slot widths where tubular inside micrometers or bore gauges may be difficult to position.

What are the measuring faces made of?
The measuring faces are made of carbide, providing resistance to wear from repeated contact.

Do I need a setting standard?
A setting standard is optional but recommended for establishing the reference point accurately before measurement.

Which model should I choose if my part is outside the 3"–4" range?
Choose a model whose measuring range brackets the required internal dimension. The 145-196 covers 3"–4", while the Mitutoyo 145-194 covers 1"–2".

Can the Mitutoyo 145-196 be recalibrated?
Yes. The micrometer can be periodically recalibrated through an ISO/IEC 17025-accredited calibration service to maintain measurement traceability.

How should I store and care for it?
Clean the measuring faces after use, store the instrument in its case away from direct sunlight and coolant, and avoid dropping it. Check the reference setting before use and schedule periodic calibration to maintain traceability.

How do I order the Mitutoyo 145-196 caliper jaw inside micrometer in Kuwait?
Pricing is quote-based. Call or WhatsApp +965 9807 4888 with the model number and quantity for price and availability.

For pricing, availability or to place an order, call or WhatsApp +965 9807 4888.