Digital inside micrometer – SA111HDGT

The digital inside micrometer is a measuring instrument designed for checking internal diameters, internal widths and dimensions in areas where the geometry of the component requires a more suitable contact configuration than traditional internal measuring instruments. It is especially useful when internal dimensions must be reached with dedicated measuring contacts.

The presence of jaws with carbide contacts is the element that defines the function of this instrument. In internal measurements, not only the resolution matters, but also the ability to correctly reach the measuring point with contact surfaces suited to the geometry of the component. For this reason, the digital inside micrometer is intended for more targeted inspections on internal points that are difficult to measure with standard configurations.

The two-point contact configuration also makes this instrument suitable for ovality inspections, because it allows the internal diameter to be checked in different orientations and possible dimensional deviations between measurements to be evaluated.

One of the main advantages of the digital version is the immediate reading on the display. The measured value is shown directly on screen, without the need to interpret the scale as on an analog micrometer. This helps reduce operator reading errors and makes inspections faster, especially during repetitive checks or when multiple components must be compared in sequence.

The 0.001 mm resolution makes this instrument suitable for finer internal inspections compared to standard hundredth-reading models. The mm/inch conversion adds practicality in daily use, while the absolute/incremental measuring mode allows more flexible measurement management depending on the inspection method and reference system used during the control process.

From a construction point of view, the instrument is equipped with a friction thimble, locking system and carbide contacts. The friction thimble helps maintain more regular contact during measurement, while the locking system keeps the measured value in position. The instrument also features IP65 protection, useful in workshop environments because it helps protect the micrometer from dust and liquids, including coolant fluids commonly found near machine tools.

The available range covers sizes from 5-30 mm, 25-50 mm, 50-75 mm and 75-100 mm. In the 5-30 mm and 25-50 mm models, setting rings are included for zero setting and instrument verification operations.

From an operational point of view, the digital inside micrometer is intended for workshops, tool rooms and quality control departments requiring an instrument more suitable for internal measurements and internal diameters. It is particularly recommended when immediate digital reading, better workshop protection and a jaw-style configuration are required for internal inspections.

Applications

• Measurement of internal diameters
• Inspection of internal widths
• Verification of internal dimensions
• Ovality inspection on internal diameters
• Dimensional inspections in workshops
• Use in tool rooms and quality control departments
• Inspections in environments with dust and coolant fluids

FAQ – Digital inside micrometer

What is a digital inside micrometer?
It is a measuring instrument designed for checking internal dimensions using a jaw-style configuration and digital display, particularly useful when the measuring point is difficult to access with traditional inside measuring instruments.

What is a digital inside micrometer used for?
It is used for measuring internal diameters, internal widths and other internal dimensions with the advantage of immediate reading on the display.

When should an inside micrometer with jaws be used?
It is recommended when the internal dimension to be checked requires a contact geometry better suited than that of standard internal measuring instruments.

Can this instrument also be used for ovality inspection?
Yes, the two-point contact configuration allows the internal diameter to be checked in different orientations and possible deviations between measurements to be evaluated.

What is the difference between this instrument and a standard inside micrometer?
The main difference is the geometry of the contact surfaces. This model is designed to correctly reach specific internal measuring points where a traditional configuration may not be suitable.

Why choose the digital version instead of the analog one?
Because the value is shown directly on the display, making reading faster and reducing interpretation errors by the operator.

What does 0.001 mm resolution mean?
It means the instrument displays measurements to the thousandth of a millimeter, providing finer resolution than standard hundredth-reading models.

What is the mm/inch conversion used for?
It allows quick switching between millimeters and inches, useful when working with different dimensional standards.

What is the purpose of the absolute/incremental measuring mode?
It allows measurements to be managed either in absolute mode or relative to a preset reference, making inspections more flexible depending on the application.

What advantage does the IP65 protection provide?
IP65 protection helps protect the instrument from dust and liquids commonly present in workshop environments, including coolant fluids.

What is the purpose of the friction thimble?
The friction thimble helps maintain more regular contact during measurement, improving repeatability during repetitive inspections.

What is the locking system used for?
It is used to keep the measured value in position for easier reading or comparison.

What measuring ranges are available?
The available range covers sizes from 5-30 mm up to 75-100 mm.

Are setting rings included?
Yes, setting rings are included in the 5-30 mm and 25-50 mm models.

Who is this digital inside micrometer intended for?
It is intended for workshops, tool rooms, production departments and quality control environments requiring a more suitable instrument for internal inspections with dedicated contacts.

What are the most common mistakes during internal measurements with this instrument?
The most common mistakes are incorrect jaw positioning, dirty surfaces, choosing an unsuitable measuring range and poor contact management during inspection.