Small Tool Instruments
and Data Management

High-Performance Height Gage

QM-Height Series• Design registered in Japan, EU and China

Catalog No. E12027(3)High-Performance Height Gage

QM-Height Series• Best-in-class accuracy ±(2.4+2.1L/600) μm• Built-in air-suspension feature using an internal pump enables smooth movement over a
surface plate. (Lower-cost version without air suspension also available)• Easy-to-view, simple control panel enables most measurements to be made with a single keystroke.
• Eco-friendly product, operable for approximately 1200 hours with four AA alkaline batteries.
(Four commercially available nickel hydride batteries can also be used.)• By installing the U-WAVE-T measurement data wireless communication system or USB
communication driver in your PC, the optional functions that enhance operability, including
output of measurement data to your PC, become available.
The USB communication driver can be downloaded from the Mitutoyo website. (Communication software is separately required.)https://www.mitutoyo.co.jp/eng/contact/products/usb/index.html

GO/±NG judgment by LED and display symbols• LEDs indicate tolerance judgment status – green for GO, red for +NG, and orangefor -NG. Status is also indicated by corresponding symbols appearing on the display.

Simple button layout and easy-to-understand pictorial keys
• The pictographs are for frequently-used keys.
• Cross-keys based on human engineering concepts areused to achieve better operability.

Inside/outside diameters, maximum/minimum heights anddisplacement can be measured using a standard probe• Besides height measurement, Mitutoyo’s proprietary mechanism and firmware enables scanningmeasurement of inside/outside diameters, maximum/minimum heights, and height differences.

“d2” is a generic term given toDigimatic output that supports up
to eight input/output digits.

2ID measurement

OD measurement

QM-Height measures height, height difference (step), inside/outside
widths, inside/outside diameters, circle pitch and also free-form
surface maximum/minimum heights and height difference by scanningmeasurement*.
QM-Height also remembers the immediately preceding measurementand displays the difference between results.
*Scanning measurement stroke is approx. 1 mm above and below from the start point of measurement.

No need to set the origin after turning on
the power• The electromagnetic induction type ABSOLUTE encoder
maintains the origin. Therefore origin setting when turning on
the power is not required.
(Except when there is a considerable environmental change.)

External output• Digimatic and USB ports are provided as standard. Using theU-WAVE-T measurement data wireless communication systemenables instant transmission of measurement data to a PC via
wireless communication, which reduces manual input errors
and improves data reliability and operational efficiency.
To install U-WAVE-T, separately purchasethe optional mounting plate (02AZE990).

Power supply• Four alkaline AA/LR6 batteries (standard accessories)• Also operates on four NiMH AA rechargeable batteries• AC adapter (optional accessory)

Probe elevation wheel• Used for measurement,
allowing fine or coarse
adjustment of probe height.

Air-suspension feature• Pressing a button on the grip
activates the internal air pump.
The base rises on a cushion of air
and is able to be moved smoothly
over the surface plate.
Note: Measurements should not be madewhile this function is in use as it
will cause measurement error.

3

Measurement examples
Heightmeasurement

IDmeasurement

HeightID

Runout measurement

Min. value

Max. value

RunoutAfter scanning the surface, the runout
will be shown in the display as (Max.
value - Min. value)
Min. value

4Max. value

A

B

Height difference measurement (1)Height A and height B from the surface
plate will be displayed.

Height A

Height B

Height difference measurement (2)CUpper row: Meas. value(Height or Dia.)
Lower row: Height
difference C

After measuring heights A and B,
the height difference C betweenthem can be shown in the lower rowof the display.

5Centralized Data Management
Misinput due to manual input can be eliminated,
and therefore operational efficiency is dramaticallyimproved.

600 mm stroke type

Without air-suspension: 518-242, 518-243
With air-suspension: 518-246, 518-247• The USB communication driver can bedownloaded from the Mitutoyo website.

Digimaticoutput

https://www.mitutoyo.co.jp/eng/

USB output
Note: Use a commercially available USB microcable (for communication use only).

WirelessTransmitter

U-WAVE-T
IP67 type: 02AZD730G
Buzzer type: 02AZD880G

ReceiverU-WAVE-R
02AZD810D

USB Input Tool Direct

USB-ITN-D
06AFM380D

PC
Measurement Data Network System
MeasurLink is an IoT platform for quality
management that realizes “Visualization ofQuality” by enabling real-time data collection
from the networked Digimatic gages and global
control and analysis.
MeasurLink® is a registered trademark of Mitutoyo Corporation in Japan and Mitutoyo America Corporation in the United States.

606AFZ050 USB cable(A-microB)

350 mm stroke type

Without air-suspension: 518-240, 518-241
With air-suspension: 518-244, 518-245

Wiredcommunication

Digimatic output
Wiredcommunication
Digimatic output
936937 Digimatic connecting cable (1 m)
965014 Digimatic connecting cable (2 m)

Digimatic Mini-Processor

DP-1VA LOGGER
264-505
Equipped with the data logger
function able to store up to 1000
records of measurement data.

Optional parts that enable centralized
data management
Order No.
Item name
Small printer equipped with Data Logger
264-505
DP-1VA LOGGER
936937
Digimatic connecting cable (1 m)
965014
Digimatic connecting cable (2 m)
06AFZ050
USB cable (A-microB)
Measurement Data Input Unit06AFM380D
USB Input Tool Direct USB-ITN-D
Measurement data wireless communication system
02AZD730G
U-WAVE-T (Transmission unit) (IP67 type)
02AZD880G
U-WAVE-T (Transmission unit) (Buzzer type)
02AZD790D
U-WAVE-T dedicated cable (Standard use)
02AZE140D
U-WAVE-T dedicated cable (For foot switch)
02AZD810D
U-WAVE-R receiver
02AZE990
U-WAVE mounting plate
Measurement data collection software for Excel USB-IT PAK V2.1
Measurement data network system MeasurLink

Contact points for a wide range ofmeasurements (Refer to page 8.)
No. Order No.
Item descriptionDepth probe(1) 12AAC072
Depth probe
Interchangeable contact points for ø5 stepped probe(2) 957261
ø2 mm ball (coaxial type)(3) 957262
ø3 mm ball (coaxial type)(4) 957263
ø4 mm ball (coaxial type)(5) 957264
ø14 mm disk(6) 957265
ø20 mm disk(7) 12AAA788
ø4 mm ball (eccentric type)(8) 12AAA789
ø6 mm ball (eccentric type)Special holder(9) 12AAA792
Holder for dial indicator(10) 12AAA793
Holder (Long)
AC Adapter
06AFZ950JA
AD620JA for Japan/U.S.
06AFZ950D
AD620D for the EU
06AFZ950EAD620E for the UK
06AFZ950K
AD620K for Korea
06AEG180DC AD620DC for China
Others05HZA143
9x9 mm adapter (clamp underneath is required)
05GZA033
Clamp (for 9x9 mm adapter)
05HZA144
6.35x12.7 mm adapter (clamp underneath is required)
901385
Clamp (for 6.35x12.7 mm adapter)
05HZA173
Scriber*
Note: A gauge block may be required for the zero-setting depending on theprobe or contact point to be used.
* Used for measurements, cannot be used for scribing.

7Contact points for a wide range ofmeasurements
6)1) 12AAC072
Depth probeø75) 2) 3)

4)

8)

9)

（94.6）

ø14ø191)10)7) 12AAA788
ø4 mm ball (eccentric type)472) 957261
ø2 mm ball (coaxial type)

52.5
8.5

22ø85) 957264
ø14 mm disk

20
ø4147

ø15
15.5
6

90

2

72

ø8（57）

ø19（62）

3

72

19.5
7（45）

48

22

ø8
ø8

ø8ø36) 957265
ø20 mm disk

862140
ø6593) 957262
ø3 mm ball (coaxial type)108) 12AAA789
ø6 mm ball (eccentric type)9) 12AAA792
Holder for dial indicator
18134447
ø14（67）

ø20 ball5ø14 ball

ø830ºø2 carbide ball7)ø828

221047
ø1410) 12AAA793
Holder (Long)
15ø8（58）

76851855

ø8ø44) 957263
ø4 mm ball (coaxial type)

(50)

8

Specifications
Order No.

MetricInch/MetricMeasuring range (Stroke)
Resolution

MetricInch/Metric

Accuracy Measurement*1
at 20 ˚C Repeatability*1
Perpendicularity*2 (20 ˚C)Guiding method
Drive method
Measurement principle
Measuring force
Data output ports
Air-suspension featurePower supply
Battery life guidelines*6
Mass
Size (mm)518-246518-240518-2410-465 mm
(350 mm / 14 in)

518-242518-244518-246518-243518-245518-2470-715 mm0-465 mm0-715 mm(600 mm / 24 in)(350 mm / 14 in)(600 mm / 24 in)
0.001/0.005 mm
0.001/0.005 mm
0.00005/0.0001/0.0002 in± (2.4 + 2.1L/600) µm
2 ≤ 1.8 µm
7 µm
12 µm
7 µm
12 µm
Roller bearing
Manual (wheel)
Electromagnetic induction absolute encoder
1.5±0.5 N
Digimatic / Digimatic 2 / USB*3
Not included
Included (for positioning only)*4
Alkaline AA /LR6 batteries × 4 (standard accessories) / AC adapter (optional accessory)*5 /Supports NiMH (HR6) rechargeable batteries × 4
Approx. 1200 hours (without using the air-suspension feature )Approx. 90 hours (when using the air-suspension feature )
25 kg
29 kg
26 kg
30 kg
Stroke 350 mm type: 280(W) x 273(D) x 784(H) mm
Stroke 600 mm type: 280(W) x 273(D) x 1016(H) mm

Operating temperature range
0 to 40 ˚C (10 to 30 ˚C)(recommended)
Operating humidity range
20 to 80 % RH (non-condensing)
Storage temperature range-10 ˚C to 50 ˚C
Storage humidity range
5 to 90 % RH (non-condensing)*1 The indication accuracy and repeatability represent the values obtained from the height measurement of a flat surface using
the standard holder with ø5 ball contact point. In the case of diameter, minimum (maximum) value, circle pitch or difference
measurement, measuring errors may be larger than the accuracy ratings listed in the table due to variations in measuring force
during a scanning measurement, which differs from height measurement.
*2 Indicates the value obtained from the measurement of a straight surface placed perpendicular to the the base reference
surface using the Lever Head (MLH-521) and Mu-checker (M-551).
*3 Requires special communication driver and software. Consult your local Mitutoyo Sales Office for details.
These can be downloaded from the Mitutoyo web site. https://www.mitutoyo.co.jp/eng/contact/products/usb/index.html*4 When using a model with the air-suspension feature, it is advisable to use a JIS 1 class, or higher, surface plate. Using on
surfaces with scratches or unevenness may prevent the system operating to the specified performance.
*5 The AC adapter cannot be used to recharge rechargeable batteries.
*6 Battery life depends on the operating conditions. In particular, it is more economical to use the optional AC adapter to power
the instrument if the application requires prolonged use of the air-suspension feature.

Dimensions
137

Unit: mmStandard accessories

350（600）

518-244784（1016）

115

131

Order No. Item
12AAA715 Probe diameter calibration block
05HZA148 ø5 mm stepped probe—
Alkaline batteries x 4 (AA/LR6)

78

280

63210
( ): Range 0-600 mm / 0-24 in

9078 1906(1)A-(CH)HS, Printed in Japan

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support for the lifetime of the equipment, backed up
by comprehensive services that ensure your staff canmake the very best use of the investment.
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Small Tool Instruments
and Data Management

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used in modern measuring technology. We can also
design, build, test and deliver bespoke measuringsolutions and even, if deemed cost-effective, takeyour critical measurement challenges in-house on a
sub-contract basis.

Find additional product literatureand our product catalogue
http://www.mitutoyo.co.jp/global.html
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