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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Beskrivning Pris 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-artikelnummer 192-5905
VarumärkeRS PRO
4 451,47 kr
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±0.003 mm 0.001 mm Metric Depth UKAS - - Yes Ratchet Stop, Setting Rods, Spindle Lock, Supplied in Fitted Case, Tungsten Carbide Anvils Yes 158mm 0mm
RS-artikelnummer 725-1968
VarumärkeRS PRO
652,25 kr
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±0.001 in 0.0001 in Imperial External UKAS - - No Adjustment Tool, Case - 1in 0in
RS-artikelnummer 725-5709
VarumärkeRS PRO
287,25 kr
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±0.001 in 0.0001 in Imperial External - - - No Adjustment Tool, Case - 1in 0in
RS-artikelnummer 877-1791
VarumärkeRS PRO
4 086,47 kr
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±0.003 mm 0.001 mm Metric Depth - - - Yes Ratchet Stop, Setting Rods, Spindle Lock, Supplied in Fitted Case, Tungsten Carbide Anvils Yes 158mm 0mm
RS-artikelnummer 785-7834
VarumärkeRS PRO
1 119,72 kr
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0.005 mm 0.01 mm Metric Internal - - - No Micrometer, Spindle Locking Screw, Barrel, Sleeve, Fitted Case with Adjustment Tools - 30mm 5mm
RS-artikelnummer 785-7838
VarumärkeRS PRO
1 213,50 kr
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0.005 mm 0.01 mm Metric Internal - - - - Micrometer, Spindle Locking Screw, Barrel, Sleeve, Fitted Case with Adjustment Tools - 50mm 25mm
RS-artikelnummer 785-7840
VarumärkeRS PRO
2 657,07 kr
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- 0.01 mm Metric Internal - - - No Micrometer, Spindle Locking Knob, Barrel, Sleeve, Storage Case - 600mm 50mm
RS-artikelnummer 785-7875
VarumärkeRS PRO
339,15 kr
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0.004 mm 0.0001 in, 0.01 mm Both Special - - - No Barrel, Sleeve, Adjustment Tools - 13mm 0mm
RS-artikelnummer 136-8115
VarumärkeRS PRO
2 413,15 kr
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- - Both External UKAS - - - - Yes 75mm 0mm
RS-artikelnummer 307-4543
VarumärkeRS PRO
749,52 kr
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±0.001 in - Imperial External UKAS - - No Adjustment Tool, Case - 2in 1in
RS-artikelnummer 785-7878
VarumärkeRS PRO
322,40 kr
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Enheter
0.003 mm 0.01 mm Both Special - - - No Barrel, Sleeve, Adjustment Tools - 25mm 0mm
RS-artikelnummer 192-5899
VarumärkeRS PRO
3 022,07 kr
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- 0.01 mm Metric Internal UKAS - - No Micrometer, Spindle Locking Knob, Barrel, Sleeve, Storage Case - 600mm 50mm
RS-artikelnummer 136-8094
VarumärkeRS PRO
1 446,15 kr
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- - Both External - - - - - Yes 75mm 0mm
RS-artikelnummer 725-2009
VarumärkeRS PRO
652,25 kr
Each
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±0.004 mm 0.01 mm Metric External UKAS - - No Adjustment Tool, Case - 25mm 0mm
RS-artikelnummer 725-5733
VarumärkeRS PRO
605,30 kr
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±0.004 mm 0.01 mm Metric External - - - No - - 25mm 0mm
RS-artikelnummer 785-7866
VarumärkeRS PRO
291,48 kr
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0.005 mm 0.01 mm Both Special - - - No Barrel, Sleeve, Adjustment Tools - 6.5mm 0mm
RS-artikelnummer 725-1946
VarumärkeRS PRO
720,90 kr
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±0.004 mm 0.01 mm Metric External UKAS - - No Adjustment Tool, Case - 50mm 25mm
RS-artikelnummer 704-8771
VarumärkeRS PRO
1 940,20 kr
Each
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±0.002 mm 0.001 mm Both External UKAS - - Yes Battery, Case, User Manual Yes 25mm 0mm
RS-artikelnummer 307-4701
VarumärkeRS PRO
1 460,73 kr
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±0.01 mm 0.01 mm Metric Special UKAS - - No - - 25mm 0mm
RS-artikelnummer 705-1260
VarumärkeRS PRO
2 141,21 kr
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±0.003 mm 0.001 mm Both Internal - - - Yes Battery, Case, Setting Ring, User Manual Yes 30mm 5mm
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