389-351-30 Outside Micrometers

Take thickness measurements of sheet metal and other long, flat parts right inside CNC machines. The display and battery cover are tightly sealed, so spraying and dripping coolant won't seep in. These micrometers have a deep throat to reach the center of workpieces, away from the edge where deformities might skew readings.

With an LCD display, these micrometers give instant measurements—no need to read scales. Swap between inch and metric or set the position to zero, all with the press of a button. You don't need to reset the zero point since they retain their position when turned off, also known as absolute (ABS) positioning.

Mitutoyo—The go-to for machinists and engineers. Every part is made within a Mitutoyo automated factory and tested in-house in Japan. The spindle glides as you turn the thimble with a weighty, silky-smooth feel.

With SPC Data Output—Send measurements to a computer or data processor to store, analyze, and manage data. You'll need a data cable or SPC wireless transmitter and receiver.

Calibration Certificate—Choose these micrometers when precision measurements are required for quality control or by regulation. The certificate is traceable to NIST, so you can be confident your measurements are correct and consistent.

Ratchet-Stop Thimble—Best for consistent, repeatable measurements. The spindle stops extending the moment it reaches your part, so it won’t overtighten. Hear and feel a satisfying click that confirms you’ve applied the right amount of pressure.

	Measuring Range		Accuracy		Measuring Increments							Outside Micrometers		Outside Micrometers with Calibration Certificate
	Inch	Metric, mm	Inch	Metric	Inch	Metric, mm	Thimble Type	Throat Dp.	Frame Material	Enclosure Rating	Mfr. Model No.		Each		Each
Mitutoyo





				With SPC Data Output

				0" to 1"	0 to 25.4	±0.0002"	±0.005 mm	0.001"	0.025	Ratchet Stop	6"	Cast Iron	IP65	389-351-30	20585A76	0000000	20585A11	0000000

Accessories and Replacements for Outside Micrometers

SPC Data Cables


Mitutoyo Data Out Switch B × 10-Pin Mitutoyo Connector	Mitutoyo Data Out Switch B × USB-A

USB-A Connection—Plug micrometers with SPC data output directly into your computer.

10-Pin Mitutoyo Connector—Connect micrometers with SPC data output to a Mitutoyo miniprocessor or multiplexer.

	Lg.		Each
Mitutoyo



	Mitutoyo Data Out Switch B × 10-Pin Mitutoyo Connector	40"	20395A83	000000
	Mitutoyo Data Out Switch B × 10-Pin Mitutoyo Connector	80"	20395A84	000000
	Mitutoyo Data Out Switch B × USB-A	80"	2429N2	000000

SPC Wireless Transmitters

Mitutoyo Data Out Switch B

Connection

Wirelessly send measurements from micrometers with SPC data output to your computer. You'll also need a receiver.

Electrical Connection	Mfr. Series		Each
Mitutoyo Data Out Switch B	U-WAVE-T	2424N2	0000000

SPC Wireless Receivers

Wirelessly send measurements from micrometers with SPC data output to your computer. You'll also need a transmitter.

	For Mfr. Series		Each
Mitutoyo



	USB-A	U-WAVE-T	2412N1	0000000

Replacement Batteries

		Each
		1-9	10-49	50-Up
Replacement SR44 Silver Oxide Battery	7604K117	00000	00000	00000