Micrometers and calipers are standard measuring tools commonly used as “sharp tools” to measure the flat and parallel characteristics of workpieces or inside/outside diameters. However, when measuring workpieces with complex shapes, such as curved surfaces or narrow grooves, it can be challenging for standard universal measuring tools to accurately measure the required position.
To measure parts with complex shapes, it is more effective and economical to choose a special non-standard measuring tool.
1. Measurement of tube wall thickness
1. A wall micrometer is recommended:
Reason: Cylindrical anvil can be used to measure pipe wall thickness.
2. Pipe wall thickness gauges are recommended:
Reason: The measuring claw of the main ruler is cylindrical, which can accurately measure the thickness of the pipe wall.
3. Recommended tube thickness table:
Reason: The anvil is at an angle of 90°, which can measure the wall thickness of the tube or flexible plate.
2. Measurement of the inner diameter of the tube
1. It is recommended to use an internal caliper:
Reason: The measuring claw is knife type, used to measure the internal position which is difficult to measure.
The measuring jaws of the same series also have sharp claw type and internal groove type.
2. Caliper type inside micrometer is recommended
Reason: The caliper-shaped measuring surface can carry out the inner diameter measurement which cannot be carried out by the universal micrometer.
3. It is recommended to use an inner diameter gauge:
Reason: The diameter of the bottom surface of the inner hole can be measured and the inner diameter of the deep hole can be measured by connecting the extension rod.
3. Groove diameter measurement
1. It is recommended to use a chip micrometer:
Reason: The measuring surface is thin, which can easily and accurately measure the diameter of the narrow groove.
2. It is recommended to use a thin caliper:
Reason: The front end of the measuring claw is thin, which can easily reach the measuring position of the narrow groove to complete the measurement.
3. It is recommended to use the blade type thickness table:
Reason: The front end of the measuring claw is leaf-shaped, which can easily reach the measuring position of the narrow groove to complete the measurement.
4. Measurement of inner diameter with groove
1. It is recommended to use a slot micrometer:
Reason: Micrometer screw and flanged anvil can measure the relationship between the inner diameter of the groove and the depth and position of the groove in the pipe.
2. It is recommended to use the hook caliper:
5. Spline measurement
1. It is recommended to use spline micrometer:
Reason: The small diameter anvil is convenient for measuring the diameter of the spline shaft and groove.
6. Measurement of the OD of Odd Slot Tap Reamer
1. It is recommended to use V-shaped anvil
R reason: The V-shaped anvil is suitable for measuring the outer diameter of taps, reamers and odd groove cutters. A single needle can be used to measure the pitch diameter.
7. Measurement of the central thickness of the plate
1. It is recommended to use a plate thickness micrometer:
Reason: The oversized ruler frame can easily measure the thickness of the boards.
8. Common Normal Length Measurement
1. It is recommended to use a dial micrometer:
Reason: The disc anvil can penetrate deep into the tooth root and is suitable for measuring the tooth root tangent length of straight cylindrical gears and helical gears.
9. Gear ball diameter measurement
1. It is recommended to use gear outer diameter micrometer
Reason: Different replaceable spherical anvils – micrometer screw measuring surfaces can be selected to measure gears with different moduli (0.5 – 5.25).
9. Measurement of effective thread diameter
1. It is recommended to use thread micrometer:
Reason: The fixed anvil can measure 60° threads.
The effective thread diameter is read directly without calculation.
2. It is recommended to use the thread micrometer with replaceable anvil
The measuring surface of the optional replaceable anvil/micrometer screw corresponds to different thread measurements. This allows the effective thread diameter to be read directly, without the need for calculations.
10. Hole Center Distance Measurement
1. It is recommended to use the offset axis caliper
Reason: With the offset value setting function, you can directly read the distance measurement value.
2. It is recommended to use center-to-center type rear measuring claw offset caliper
Reason: With the offset value setting function, you can directly read the distance measurement value.
11. Measuring spacing between single holes
It is recommended to use edge-to-center type rear measuring claw displacement caliper
Reason: The center edge measuring claw is suitable for measuring the distance between individual holes, and there is a measuring claw on the back of the ruler frame for easy reading of measurement results.
12. Measurement of the size of irregular stenosis
Pointed jaw calipers are recommended:
Reason: The pointed claw type measuring claw can penetrate deep into very small grooves or tracks and easily measure the outer diameter, inner diameter, depth and segment difference.
13. Stenosis thickness measurement
A pointed claw micrometer is recommended:
Reason: The radius of the anvil tip is about 0.3mm, which can be used to measure the wall thickness of holes, small grooves, keyways and other dimensions that are difficult to measure.
14. Dimension measurement of displacement position
It is recommended to use displacement calipers:
Reason: The height difference measuring claw design is suitable for measuring the pitch difference section and the size of the workpiece that is difficult to measure.
15. Measurement of concave wall thickness
It is recommended to use an anvil wall thickness spherical micrometer:
Reason: The two measuring surfaces are spherical and can measure the thickness of the concave wall.
