340-721 Outside Micrometers

Measure parts of different sizes and quickly view readings with a single tool. These micrometers come with multiple anvils that you switch out, so you don't need to lug around a case of micrometers.

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.

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
	Inch	Metric, mm	Inch	Metric	Inch	Metric, mm	Thimble Type	Throat Dp.	Frame Material	Measuring Functions	Mfr. Model No.	Includes		Each
Mitutoyo







				With SPC Data Output

				18" to 24"	457 to 610	±0.0005"	±0.012 mm	0.0001"	0.001	Ratchet Stop	13"	Cast Iron	Zero-Position Memory (ABS)	340-721	Six Anvils Six Calibration Rods	20605A12	000000000
				Wide-Range Digital Outside Micrometer, Mitutoyo Model Number 340-721 Product Detail QuantityEachIn stock

Accessories and Replacements for Outside Micrometers

Mitutoyo Cords


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	0000000


	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

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