Inventory of 16 parts measurement methods

Standard measuring tools such as micrometers or calipers are commonly used "tools" for measuring flat and parallel features or inner/outer diameters of workpieces. However, when measuring workpieces with complex shapes, such as curved surfaces or narrow grooves, it may be difficult for standard universal measuring tools to reach the accurate measurement position. It is relatively easier and more economical to choose dedicated non-standard measuring tools.           

01

Measurement of pipe wall thickness

It is recommended to use a wall thickness micrometer:

  Reason: The cylindrical anvil can penetrate deep into the pipe for wall thickness measurement.    

It is recommended to use pipe wall thickness caliper:

Reason: The measuring claw of the main ruler is cylindrical, which can accurately measure the thickness of the pipe wall.    

It is recommended to use the pipe thickness table:

Reason: The measuring anvil is at a 90° angle and can measure the thickness of pipe wall or bent plate.    

02

Measurement of pipe inner diameter

It is recommended to use an inner diameter caliper:

  Reason: The measuring claw is a blade type and is used to measure inner positions that are difficult to measure. Measuring claws of the same series also include pointed claw type and inner groove type.    

It is recommended to use a caliper-type inside micrometer:

  Reason: The caliper-shaped measuring surface enables inner diameter measurements that cannot be achieved with a general-purpose micrometer.    

It is recommended to use the inner diameter table:

Reason: It can measure the diameter of the bottom surface of the inner hole, and the inner diameter of the deep hole can be measured by connecting the extension rod.    

03

Measurement of groove diameter

It is recommended to use a thin micrometer:

  Reason: The measuring surface is a thin sheet, which can easily and accurately measure the diameter of narrow grooves.    

It is recommended to use thin calipers:

  Reason: The front end of the measuring claw is thin-shaped, which can easily reach the measuring position of the narrow groove to complete the measurement.    

It is recommended to use the blade thickness table:

Reason: The front end of the measuring claw is in the shape of a sheet, which can easily reach the measuring position of the narrow groove to complete the measurement.    

04

Inside diameter measurement with groove

It is recommended to use a grooved micrometer:

  Reason: The micrometer screw and anvil with flange can measure the inner diameter of the groove and the depth and position relationship of the groove in the pipe.    

It is recommended to use hook type vernier caliper:

  Reason: The front end of the measuring claw is hook-shaped, which can measure the size of the stepped groove of the inner diameter of the cylinder.  

05

Spline measurement

It is recommended to use a spline micrometer:

  Reason: The small diameter anvil makes it easy to measure the diameter of spline shafts and grooves.  

06

Outer diameter measurement of odd-numbered flute tap reamers

It is recommended to use a V-shaped anvil micrometer:

  Reason: V-shaped anvil is suitable for measuring the outer diameter of taps, reamers and milling cutters with odd number of grooves, and can use a single needle to measure the pitch diameter.    

07

Measurement of plate center thickness

  It is recommended to use a plate thickness micrometer:

  Reason: The extra large ruler frame can easily measure the thickness of the board.    

08

Measurement of common normal length

It is recommended to use a disk micrometer:

  Reason: The disc-type anvil can penetrate deeply into the tooth root and is suitable for measuring the tangential length of the tooth root of spur gears and helical gears.    

09

Diameter measurement of gear balls

It is recommended to use a gear outer diameter micrometer:

  Reason: You can choose different replaceable spherical anvils - micrometer screw measuring surface shapes, which can measure gears with different modules (0.5 - 5.25).    

10

Measurement of effective thread diameter

It is recommended to use a threaded micrometer:

  Reason: The fixed anvil can measure 60° threads. The effective diameter of the thread is read directly without calculation.    

It is recommended to use a threaded micrometer with replaceable anvils:

  Reason: Optional replaceable measuring anvil/micrometer screw measuring surface, corresponding to the measurement of different threads. The effective diameter of the thread is read directly without calculation.    

11

Measurement of hole center distance

It is recommended to use an offset centerline caliper:

  Reason: With offset value setting function, the distance measurement value can be read directly.    

It is recommended to use center-center type back-jaw type offset caliper:

  Reason: With offset value setting function, the distance measurement value can be read directly.    

12

Measurement of single hole spacing

It is recommended to use edge-center type back-jaw type offset caliper:

  Reason: The edge-center type measuring claw is suitable for measuring the distance between single holes, and the measuring claw is provided on the back of the ruler frame to facilitate reading the measurement results from above.    

13

Dimensional measurement of irregular narrow areas

It is recommended to use pointed claw calipers:

  Reason: The pointed claw measuring claw can penetrate into very small grooves or tracks, easily achieving measurements of outer diameter, inner diameter, depth and step.    

14

Thickness measurement of stenosis

It is recommended to use a pointed claw micrometer:

  Reason: The anvil tip radius is about 0.3mm, which can be used to measure wall thickness dimensions that are difficult to measure such as drilled holes, small grooves, and key grooves.    

15

Dimensional measurement of step difference parts

It is recommended to use an offset caliper:

  Reason: The measuring claw design with different heights is suitable for measuring step sections and workpiece dimensions that are difficult to measure.    

16

Wall thickness measurement of recesses

It is recommended to use a spherical anvil wall thickness micrometer:

  Reason: The two measuring surfaces are spherical and can measure the thickness of the concave wall.