Micrometers

What are micrometers?
A micrometer (sometimes called micrometer screw gauge) is a precision measuring instrument, used to obtain very fine measurements and available in metric and imperial versions. They use a calibrated screw or thread (found internally on the spindle) for precise measurement of components in mechanical engineering and machining as well as most mechanical trades. They usually come in the form of calipers e.g. opposing ends joined by a frame.
Micrometers are composed of:
• Frame - The C-shaped body that holds the anvil and barrel in constant relation to each other.
• Anvil - The shiny part that the spindle moves toward, and that the sample rests against.
• Sleeve / barrel / stock - The stationary round component with the linear scale on it, sometimes with vernier markings.
• Lock nut / lock-ring / thimble lock - The knurled component (or lever) that tightens to hold the spindle stationary.
• Spindle - The shiny cylindrical component that the thimble causes to move toward the anvil
• Thimble - The component that turns by using a person’s thumb. Graduated markings.
• Ratchet stop - Device on end of handle that limits applied pressure by slipping at a calibrated torque.
• Screw

How do they work?
The precision is determined by the thread pitch of the spindle. The spindle is a very accurately machined screw and the object to be measured is placed between the spindle and the anvil. The spindle is moved by turning the ratchet knob or thimble until the object to be measured is lightly touched by both the spindle and the anvil.

Types of Micrometers
• Outside micrometer: most common type used to measure external dimensions such as the outside diameter of an object.
• Inside micrometer; used to measure inside dimensions like the inside diameter of a hole or tube. There are two types: caliper-type and tubular and rod.
• Depth micrometer: these are used to measure the depths of holes, slots and steps. They come with a variety of interchangeable rods of different lengths so that they can be used to measure a range of depths.
Advantages
• Provide very accurate measurements and are considered one of the most accurate types of measuring device.
• Ratchet speeder helps to provide reliable measurements.
• Integrated scales, the sleeve scale and thimble scale are built into the tool, another measuring instrument such as a ruler or tape measure is not required.
• Durability and long lasting and unlikely to need replacing or repairing

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Omschrijving Prijs Accuracy Resolution Imperial or Metric Micrometer Type Calibrated SPC Data Output Data Processing Battery Operated Set Contents Metric-Imperial Conversion Maximum Measurement Minimum Measurement
RS-stocknr. 785-7847
FabrikantRS PRO
184,34 €
Each
Aantal stuks
- 0.01 mm Metric Internal - - - No Micrometer, Spindle Locking Knob, Barrel, Sleeve, Storage Case - 250mm 50mm
RS-stocknr. 300-8265
FabrikantRS PRO
71,16 €
Each
Aantal stuks
±0.01 mm - Metric Special - - - No - - 25mm 0mm
RS-stocknr. 667-3938
FabrikantRS PRO
484,26 €
1 Set
Set(s)
±0.004 mm 0.001 mm Metric Internal - - - No - - 20mm 12mm
RS-stocknr. 239-0399
FabrikantRS PRO
33,26 €
Each
Aantal stuks
±0.001 in - Imperial External - - - No Adjustment Tool, Case - 2in 1in
RS-stocknr. 307-4694
FabrikantRS PRO
132,65 €
Each
Aantal stuks
±0.004 mm 0.01 mm Metric External UKAS - - No Adjustment Tool, Case - 25mm 0mm
RS-stocknr. 136-8115
FabrikantRS PRO
257,20 €
Each
Aantal stuks
- - Both External UKAS - - - - Yes 75mm 0mm
RS-stocknr. 833-6436
Fabrikantnummer293-821-30
FabrikantMitutoyo
171,61 €
Each
Aantal stuks
±2 μm 0.001 mm Metric External - - - Yes - - 25mm 0mm
RS-stocknr. 192-5907
Fabrikantnummer293-821-30
FabrikantMitutoyo
212,11 €
Each
Aantal stuks
±2 μm 0.001 mm Metric External UKAS - - Yes - - 25mm 0mm
RS-stocknr. 795-9915
Fabrikantnummer368-914
FabrikantMitutoyo
2.372,10 €
Each
Aantal stuks
- 0.005 mm Metric Internal - - - No Extension Rod, Ring Gauge - 100mm 50mm
RS-stocknr. 794-5499
Fabrikantnummer293-145-30
FabrikantMitutoyo
287,76 €
Each
Aantal stuks
±1 μm 0.001 mm Metric Special UKAS - Yes Yes - - 25mm 0mm
RS-stocknr. 833-6427
Fabrikantnummer293-240-30
FabrikantMitutoyo
224,68 €
Each
Aantal stuks
±1 μm 0.001 mm Metric External - - - Yes - - 25mm 0mm
RS-stocknr. 192-5898
Fabrikantnummer293-240-30
FabrikantMitutoyo
265,18 €
Each
Aantal stuks
- - - - - - - - - - - -
RS-stocknr. 794-3519
Fabrikantnummer293-145-30
FabrikantMitutoyo
247,26 €
Each
Aantal stuks
±1 μm 0.001 mm Metric Special - - Yes Yes - - 25mm 0mm
RS-stocknr. 795-9906
Fabrikantnummer368-913
FabrikantMitutoyo
2.017,58 €
Each
Aantal stuks
- 0.005 mm Metric Internal - - - No 368-166, 368-167, 368-168, 368-169 - 50mm 20mm
RS-stocknr. 397-6584
Fabrikantnummer102-217
FabrikantMitutoyo
59,84 €
Each
Aantal stuks
±0.002 mm 0.01 mm Metric External - - - No Case, Gauge - 25mm 0mm
RS-stocknr. 192-5906
Fabrikantnummer102-217
FabrikantMitutoyo
100,34 €
Each
Aantal stuks
±0.002 mm 0.01 mm Metric External UKAS - - No Case, Gauge - 25mm 0mm
RS-stocknr. 432-255
Fabrikantnummer101468M
FabrikantMitutoyo
12,98 €
Each
Aantal stuks
- - Metric Special - - - No - - - -
RS-stocknr. 572-101
Fabrikantnummer103-138
FabrikantMitutoyo
90,55 €
Each
Aantal stuks
±0.002 mm 0.01 mm Metric External - - - No Adjustment Tool, Case, Stand, User Manual - 50mm 25mm
RS-stocknr. 794-5556
Fabrikantnummer293-146
FabrikantMitutoyo
381,47 €
Each
Aantal stuks
±1 μm 0.001 mm Metric Special UKAS - Yes Yes - - 50mm 25mm
RS-stocknr. 431-527
FabrikantnummerDW933
FabrikantStarrett
336,84 €
Each
Aantal stuks
±0.0004 in - Both Internal UKAS - - No Adjustment Tool, Measuring Rod, Micrometer Head - 12in 2in
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