Outside Micrometers for Gears with Calibration Certificate
These micrometers come with a calibration certificate traceable to NIST that states they've passed a test for accuracy. The disc-shaped anvil and spindle fit into narrow recesses to measure the thickness of gear teeth. Each micrometer has a ratchet-stop thimble with a speeder knob to reduce the time it takes to open and close the micrometer. A constant-force mechanism stops the micrometer’s spindle from tightening once it contacts the surface of the measured object. This ensures repeatable measurements and prevents over-tightening. When the spindle stops tightening, the thimble stops turning, but the speeder knob will continue turning with a clicking sound.
223-125 model has a mechanical analog counter that displays measurement readings. It does not require batteries.
323-350-30 model displays measurements on an easy-to-read LCD. It has zero-position memory, also known as absolute (ABS) positioning, which retains the measuring position when the micrometer is turned off. A zero-set button allows you to start measuring at any point.
Measuring Range | Accuracy | Measuring Increments | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | Metric | Inch | Metric | Inch | Metric | Throat Dp. | Frame Material | Analog Counter Numeric Increments | Batteries Included | Features | Mfr. | Mfr. Model No. | Each | |
Analog Display—Ratchet-Stop Thimble | ||||||||||||||
| 0"-1" | __ | ±0.0002" | __ | 0.001" | __ | 1" | Cast Iron | 0.001" | __ | __ | Mitutoyo | 223-125 | 0000000 | 0000000 |
LCD Display—Ratchet-Stop Thimble | ||||||||||||||
| 0"-1" | 0 mm-25.4 mm | ±0.0002" | ±0.005 mm | 0.00005" | 0.001 mm | 1" | Cast Iron | __ | Yes | Vernier Scale, Zero-Position Memory (ABS), Zero-Set Button | Mitutoyo | 323-350-30 | 00000000 | 000000 |
| Replacement Battery for 323-350-30 Model | 00000000 | Each | 00000 |
Outside Micrometers for Gears
Disc-shaped measuring faces fit into recesses to measure the thickness of gear teeth. These micrometers have a ratchet-stop thimble with a speeder knob to reduce the time it takes to open and close the micrometer. A constant-force mechanism stops the micrometer’s spindle from tightening once it contacts the surface of the measured object. This ensures repeatable measurements and prevents over-tightening. When the spindle stops tightening, the thimble stops turning, but the speeder knob will continue turning with a clicking sound.
223-125 model has a mechanical analog counter that displays measurement readings. It does not require batteries.
323-350-30 model displays measurements on an easy-to-read LCD. It has zero-position memory, also known as absolute (ABS) positioning, which retains the measuring position when the micrometer is turned off. A zero-set button allows you to start measuring at any point.
Measuring Range | Accuracy | Measuring Increments | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | Metric | Inch | Metric | Inch | Metric | Throat Dp. | Frame Material | Analog Counter Numeric Increments | Batteries Included | Features | Mfr. | Mfr. Model No. | Each | |
Analog Display—Ratchet-Stop Thimble | ||||||||||||||
| 0"-1" | __ | ±0.0002" | __ | 0.001" | __ | 1" | Cast Iron | 0.001" | __ | __ | Mitutoyo | 223-125 | 0000000 | 0000000 |
LCD Display—Ratchet-Stop Thimble | ||||||||||||||
| 0"-1" | 0 mm-25.4 mm | ±0.0002" | ±0.005 mm | 0.00005" | 0.001 mm | 1" | Cast Iron | __ | Yes | Vernier Scale, Zero-Position Memory (ABS), Zero-Set Button | Mitutoyo | 323-350-30 | 00000000 | 000000 |
| Replacement Battery for 323-350-30 Model | 00000000 | Each | 00000 |
Outside Micrometers for Thin Materials
Measure the thickness of paper and other thin materials without distorting them. These micrometers have disc-shaped tips and a non-rotating spindle that apply soft pressure on delicate parts. A ratchet-stop thimble with a speeder knob reduces the time it takes to open and close these micrometers. When the spindle stops tightening, the thimble stops turning, but the speeder knob will continue turning with a clicking sound.
| Measuring Range | Accuracy | Measuring Increments | Throat Dp. | Frame Material | Manufacturer | Manufacturer Model Number | Each | |
Ratchet-Stop Thimble | ||||||||
|---|---|---|---|---|---|---|---|---|
| 0"-1" | ±0.0002" | 0.001" | 0.984" | Cast Iron | Mitutoyo | 169-103-10 | 0000000 | 0000000 |
Inside Hole Micrometers for Grooves
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Inside | Outside | Accuracy | Measuring Increments | Material | Overall Lg. | Manufacturer | Manufacturer Model Number | Each | |
Ratchet-Stop Thimble—Nonrotating Spindle | |||||||||
| 0.055"-1.05" | 0"-1" | ±0.0004" | 0.001" | Steel | 9 1/2" | Mitutoyo | 146-232 | 0000000 | 0000000 |
| 1.05"-2.05" | 1"-2" | ±0.0004" | 0.001" | Steel | 9 1/2" | Mitutoyo | 146-233 | 0000000 | 000000 |
| 2.05"-3.05" | 2"-3" | ±0.0004" | 0.001" | Steel | 9 1/2" | Mitutoyo | 146-234 | 0000000 | 000000 |
| 3.05"-4.05" | 3"-4" | ±0.0004" | 0.001" | Steel | 9 1/2" | Mitutoyo | 146-235 | 0000000 | 000000 |