Back plunger 0.001 mm dial gauge Kafer – SA028KMR

The back plunger 0.001 mm dial gauge Kafer is designed for highly sensitive comparative inspections, when very small deviations must be detected with greater sensitivity than a standard 0.01 mm dial gauge. The 0.001 mm reading makes it particularly suitable for inspections where very limited variations must be observed accurately, especially in adjustment operations, runout inspection and alignment checks.

This model works according to the typical operating principle of a dial gauge: the contact point touches the part, the movement is transferred to the pointer and the variation relative to the reference setting is displayed on the dial. For this reason, the instrument is not intended for direct absolute measurement, but for checking differences, deviations and small dimensional variations relative to a known reference.

Compared to a traditional front dial 0.001 mm dial gauge, the distinctive feature here is the back plunger configuration. This solution is especially useful when the frontal view is inconvenient, partially obstructed or difficult because of the mounting position of the instrument. In these situations, top reading makes the inspection more immediate and can be particularly advantageous on fixtures, supports, measuring devices and workstations where the available space limits frontal access.

From an application point of view, the back plunger configuration is well suited for inspections where the dial gauge is mounted in positions that make the front side less accessible to the operator. It is commonly used on dedicated fixtures, close mounting conditions and applications where reading from above is more practical than frontal reading.

The 0.001 mm resolution places this model in the category of highly sensitive dial gauges, making it suitable for inspections of runout, concentricity, eccentricity, flatness and parallelism, and all applications where very small deviations must be monitored accurately. It is therefore selected when a standard 0.01 mm dial gauge is not sensitive enough and finer reading is required.

The series is available with 0–1 mm measuring range and with 40 mm or 58 mm dial diameter. This allows the user to select the most suitable configuration according to the available space, visibility requirements and the type of fixture where the dial gauge must be installed.

Optional interchangeable threaded contact points are available on request, allowing the contact configuration to be adapted according to the inspection type and the geometry of the part. This increases the versatility of the dial gauge in different comparative applications.

From an operational point of view, the back plunger 0.001 mm dial gauge is intended for mechanical workshops, tooling departments and quality control applications requiring highly sensitive comparative inspections with a more practical top reading configuration. It is particularly useful when high sensitivity, immediate readability and installation flexibility are required.

Applications

• Comparative inspection of very small deviations
• Verification of runout, eccentricity and concentricity
• Flatness and parallelism inspections
• Fine adjustment and alignment operations
• Use on supports and fixtures with limited frontal access
• Applications where top reading is more practical
• Repetitive inspections in workshop and quality control
• Applications requiring 0.001 mm reading

FAQ – Back plunger 0.001 mm dial gauge

What is a back plunger 0.001 mm dial gauge?
It is an analog dial gauge designed for highly sensitive comparative inspections, with 0.001 mm reading and a back plunger configuration that allows more practical top reading.

What is a back plunger 0.001 mm dial gauge used for?
It is used to verify very small deviations relative to a reference, for example in inspections of runout, concentricity, eccentricity, flatness and parallelism.

What is the advantage of the back plunger configuration?
It makes reading easier when frontal visibility is inconvenient, limited or difficult because of the mounting position of the instrument.

When should a back plunger dial gauge be selected instead of a standard model?
It is useful when inspections are performed on fixtures, supports or measuring devices where the operator can read the dial more easily from above.

What is the difference between a 0.001 mm dial gauge and a 0.01 mm dial gauge?
The 0.001 mm version offers finer sensitivity and is intended for inspections where very small deviations must be checked with greater detail.

How does a dial gauge work?
The contact point moves when touching the part and the movement is transferred to the pointer, which displays the variation relative to the reference setting.

What does 0.001 mm reading mean?
It means the instrument can detect variations down to one-thousandth of a millimeter.

What measuring range is available?
This model is available with 0–1 mm measuring range.

What dial diameters are available?
The dial is available in 40 mm and 58 mm versions.

Does the back plunger dial gauge measure an absolute dimension?
No, it is normally used for comparative inspections, meaning to read deviations relative to a known reference.

Can the dial gauge be supplied with interchangeable threaded contact points?
Yes, interchangeable threaded contact points are available on request to adapt the contact configuration to the inspection type.

In which applications is it most commonly used?
It is commonly used in highly sensitive comparative inspections, precision adjustment operations, runout checks and applications where top reading is more practical.

Who is this dial gauge intended for?
It is intended for mechanical workshops, tooling departments and quality control applications requiring highly sensitive comparative inspections with a more convenient reading configuration.