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Mitutoyo Inside Hole Micrometers for Grooved Surfaces
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Reach into bores to measure the precise size and location of grooves. These micrometers have two discs on their measuring spindle to find a groove’s edge. Slide the spindle into your bore, press the discs against the wall and into the groove, and twist the thimble to measure the distance between the two discs. A speeder knob moves the measuring spindle more quickly toward or away from your groove, without turning the thimble repeatedly. When the spindle touches the groove you’re measuring, it will stop tightening, but the speeder knob will continue turning with a clicking sound. The spindle doesn’t rotate, so the contact points won’t spin or slip out of a groove.
Measuring Range | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Inside Lg. | Outside Lg. | Accuracy | Measuring Increments | Material | Overall Lg. | Mfr. Model No. | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ratchet-Stop Thimble—Nonrotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0.055" to 1.05" | 0" to 1" | -0.0004" to 0.0004" | 0.001" | Steel | 9 1/2" | 146-232 | 0000000 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1.05" to 2.05" | 1" to 2" | -0.0004" to 0.0004" | 0.001" | Steel | 9 1/2" | 146-233 | 0000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2.05" to 3.05" | 2" to 3" | -0.0004" to 0.0004" | 0.001" | Steel | 9 1/2" | 146-234 | 0000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3.05" to 4.05" | 3" to 4" | -0.0004" to 0.0004" | 0.001" | Steel | 9 1/2" | 146-235 | 0000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mitutoyo Inside Hole Micrometers
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Find the inside diameter of cylinders and rings. Rotate the plain thimble until it fits snugly inside the space you’re measuring. These micrometers rely on the operator to determine a secure fit to take accurate measurements. Attach one of the included extension rods to the micrometer head to measure in hard-to-reach spaces.
Mitutoyo Digital Inside Hole Micrometers
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With an LCD screen, these micrometers make it easy to read inside diameter measurements taken from cylinders and rings. Place the micrometer inside your bore, then turn the thimble until the spindle makes contact with both sides. For an accurate reading, stop turning as soon as you feel resistance on the thimble.
Cords for Measuring Tool Data Processors—USB-A connection data cables (sold separately) connect micrometers directly to your PC. 10-pin Mitutoyo connectors (sold separately) connect micrometers to a Mitutoyo miniprocessor or multiplexer.
SPC Wireless Transmitters—SPC wireless data transmitters (sold separately) let you send data from micrometers to your PC without a cable.
SPC Wireless Receivers—SPC wireless data receivers (sold separately) let you send data from micrometers to your PC without a cable.
Distance Measured Range | Accuracy | Measuring Increments | Material | No. of Extension Rods | Extension Rod Dia. | No. of Heads | Head Travel | Batteries Included | Mfr. Model No. | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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303 Series—Plain Thimble | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 8" to 40"; 204 mm to 1,016 mm | -0.0015" to 0.0015", -0.040 mm to 0.040 mm | 0.0001", 0.001 mm | Steel | 6 | 5/8" | 1 | 1" | Yes | 339-303 | 0000000 | 000000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
