Note: All information regarding our products, and in particular the illustrations, drawings, dimensional and performance data contained in this pamphlet, as well as other
technical data are to be regarded as approximate average values. We therefore reserve the right to make changes to the corresponding designs, dimensions and weights.
The stated standards, similar technical regulations, descriptions and illustrations of the products were valid at the time of printing. Only quotations submitted by ourselves
may be regarded as definitive.
Our products are classified as regulated items under Japanese Foreign Exchange and Foreign Trade Law. Please consult us in advance if you wish
to export our products to any other country. If the purchased product is exported, even though it is not a regulated item (Catch-All controls
item), the customer service available for that product may be affected. If you have any questions, please consult your local Mitutoyo sales office.
Our products are classified as regulated items under
Japanese Foreign Exchange and Foreign Trade Law.
Please consult us in advance if you wish to export our
products to any other country. If the purchased
product is exported, even though it is not a regulated
item (Catch-All controls item), the customer service
available for that product may be affected. If you have
any questions, please consult your local Mitutoyo sales
office.
Small Tool Instruments and Data Management
Catalog No.E4318
Coolant Proof Micrometer
QuantuMike
Speedy measurement is achieved thanks to 2 mm* of
spindle feed for every thimble revolution!
* l Patent registered (in USA)
l Patent pending (in Japan, Europe, and China)
Pioneering design,
means taking the lead
2
Coolant proof micrometer
Debut of next-generation micrometer delivering performance far beyond users’ expectations thanks
thanks to integration of cutting-edge technology
Coolant proof micrometer
Mitutoyo is proud to have reached its leading position
in the micrometer market through a spirit of innovation,
imagination and creating added value. The QuantuMike
brand of micrometer, inspired by this Mitutoyo Spirit,
provides users with an excellent measuring experience with
higher speed, quality and stability than ever before owing
to the integration of sophisticated manufacturing and
processing technologies.
The new global standard ······ QuantuMike
Evolution since the innovation by James Watt in 1772
History of micrometer advancement
1772 1937
Micrometer invented by
James Watt (UK)
Success in manufacturing
micrometers domestically
The name QuantuMike is from
Quantum and Micrometer,
reflecting our belief this tool
represents a quantum leap in
micrometer ergonomics.
3
60
50
40
30
20
10
0
Time [s]
Conventional model
41 sec.
12 sec.
Time needed to measure a multi-stepped
cylindrical workpiece (with one hand)
QuantuMike
53 sec.
12 sec.
10 sec.
22 sec.
■■ Positioning time
■■ Measuring time
1 revolution
of thimble
Spindle feed
per revolution
0.5mm
2.0mm
Conventional
model (MDC)
QuantuMike
Debut of next-generation micrometer delivering performance far beyond users’ expectations thanks
thanks to integration of cutting-edge technology
Evolution since the innovation by James Watt in 1772
1971 1979 2003 2007
Starting production of digit outside
micrometers
Starting production of Digimatic
micrometers
Development of coolant proof
micrometers with degree of
protection IP65
Speedy measurement
Faster measurement is achieved by using a coarser thread which feeds the spindle by 2mm per revolution of the thimble instead of the
standard 0.5mm. This increase in thread lead has been made possible thanks to new high precision thread-cutting and test techniques.
Trials show that a reduction in positioning times of 60% and measuring times of 35%* can be obtained, compared with a conventional
micrometer.
* According to Mitutoyo's comparison test data for measuring time on typical workpieces.
Comparison of measuring time on a stepped
workpiece
The time needed to measure 6
diameters on a workpiece, from
the smallest to the largest with the
micrometer held in one hand, was
recorded for a conventional digital
micrometer and for the QuantuMike
n
Significant reduction in positioning time
4
シンブル部
ラチェット
スピーダ部
ラチェット
Repeatable measurement
The patented ratchet thimble mechanism* helps ensure repeatable
results by transmitting microvibrations along the spindle to the
contact face to provide a constant measuring force and encourage
good contact with the workpiece. The ratchet works from the
thimble as well as the speeder so it is always easy to use - even
when making measurements one-handed. The sound of the ratchet
provides the user with a sense of confidence and the speeder
enables the rapid spindle
feed needed when measuring
widely different dimensions.
* Patent registered (in Japan, USA, China,
Germany, UK, and France)
Function lock helps prevent error
QuantuMike is equipped with a function lock feature to prevent the
origin point being moved by mistake
during measurement.
±1μm/±.00005” accuracy
Graduated sleeve provides confidence check
A graduated scale is provided on the sleeve for use with a reference
mark on the thimble so that every millimetre displacement can be
checked to provide extra confidence.
Useful application of measured data
A statistical process control system and a measurement network
system can be established to share information regarding quality
with a model equipped with the data output function.
Dust/water resistance with IP65 protection level
Excellent resistance against oil, water and dust enables this product
to be used in machining situations that include splashing coolant
fluid.
Ratchet-induced
microvibrations along the
spindle help ensure repeatable
measurements
Ratchet on thimble Ratchet on speeder
Function lock
Reference mark
*1: A jet nozzle with an inside diameter of 6.3 mm directs a volume flow of 12.5 liters per
minute from a distance of approximately 3 meters onto the enclosure. The test time is 3
minutes or more.
Category Level Description
Protection against
human contact and
foreign bodies
6: Sealed against dust Protection against ingress of
dust, complete protection
against contact
Protection against
water
5: Protection against
water
Water jets*1 directed at the
enclosure from any direction
must not have any harmful
effects.
Measurements are made to an accuracy* of ±1um/.00005”
throughout the range.
*Quantization error of ±1 count excluded
mm inch/mm
Reference mark
5
Data output function equipped
293-140 (mm)
Data output function equipped
293-141 (mm)
Data output function equipped
293-180 (inch/mm)
Data output function equipped
293-181 (inch/mm)
• A Certificate of Inspection is supplied with each instrument
shipped that guarantees the quality of the product. Please note
that this certificate cannot be used to obtain a Certificate of
Calibration because the purchase date cannot be specified.
• Please let us know if a Certificate of Calibration is required
when ordering a micrometer. This certificate is supplied, for a
fee, and certifies the traceability of the purchased instrument
and of the standard that was used to calibrate that instrument.
• Certificates of inspection and calibration are issued after
processing each instrument by special measuring equipment,
developed using Mitutoyo’s advanced measuring technologies,
which feature very small uncertainties of measurement.
n Certificate of inspection attached
6
Functions Origin point setting (ABS length measurement
system)
Zero setting (INC length measurement system)
Hold
Function lock
Auto power ON/OFF
Data output *1
Error alarm
Degree of protection IP65 (IEC60529)*2
Measuring force 7-12N
Power supply Button type silver oxide battery (SR44), 1 piece
Position detection system Electromagnetic rotary sensor *3
Battery life Approx. 3 years under normal conditions
Standard accessories Reference bar, 1 piece (not for 0-25mm models)
Button type silver oxide battery (SR44, No.
938882), 1 piece
Spanner (No. 301336), 1 piece
n Common specifications
Origin point
setting (ABS length
measurement
system)
Pressing the ORIGIN button resets the ABS origin at the
current spindle position.
Zero setting
(INC length
measurement
system)
A brief press on the ZERO/ABS button sets display to
zero at the current spindle position and switches to
the incremental (INC) measuring mode. A longer press
resets to the ABS measuring mode.
Hold Pressing the HOLD button freezes the current value
in the display. This function is useful for preserving a
measurement in situations of poor visibility when the
instrument must be moved away from the workpiece
before the reading can be recorded. A second press
unfreezes the display ready for another measurement.
Function lock This function allows the ORIGIN (origin point setting)
function and the ZERO (zero setting) function to be
locked to prevent these points being reset accidentally.
Auto power
ON/OFF
The reading on the LCD disappears after this
instrument is idle for approx. 20 minutes, but the
origin point is retained. Turning the spindle causes the
reading on the LCD to reappear.
Data output Models equipped with this function have an output
port for transferring measurement data to a Statistical
Process Control (SPC) system.
Error alarm In case of an overflow on the LCD or a computing
error, an error message appears on the LCD, and the
measuring function stops. This prevents an instrument
from giving an erroneous reading. Also, when the
battery voltage drops to a certain level the low-
battery-voltage alarm annunciator appears well before
the micrometer becomes unusable.
n Functions
n Dimensions
n Selective specifications
Order No. Measuring
range
Resolution Instrumental
error*
Flatness of
measuring faces
Parallelism of
measuring faces
Weight
Data output function equipped 293-140 0-25mm
0.001mm ±1μm
0.3μm or less 1μm or less
265g
293-141 25-50mm 325g
Data output function not equipped 293-145 0-25mm 265g
293-146 25-50mm 325g
Data output function equipped 293-180 0-1”/0-25mm
.00005”/ 0.001mm ±.00005”/±1μm
265g
293-181 1-2”/ 25-50mm 325g
Data output function not equipped 293-185 0-1”/ 0-25mm 265g
293-186 1-2”/25-50mm 325g
L 37.548.5
19.3
6.35
b
27
a3
2.8
23.1
L a b
0-25mm (0-1”) 0 9 25
25-50mm (1-2”) 25 9.8 32
*1: Applicable only to 293-140/293-141/293-180/293-181
*2: This product is not waterproof. Rustproofing shall be applied after use.
*3: Patent pending (in Japan, USA, Europe, and China)
*Quantization error of ±1 count excluded
0-25mm (0-1”) range model
Unit: mm
7
n Optional accessory (Only for models with data output function)
• Connection cable with output switch
No.05CZA662=1m
No.05CZA663=2m
• Digimatic mini processor, DP-1VR
No.264-504
(Data processor for
quality control)
• Input tool, IT-12U
(USB keyboard signal conversion type)
No.264-012
• Multiplexer, MUX-10F
No.264-002
(Unit for combining many data streams)
n Optional accessory
Color Product No.
Black No.04GAA899*
Red No.04GAA900
Yellow No.04GAA901
Green No.04GAA902
Blue No.04GAA903
Gray No.04AAB208
• Color speeder sleeve
Color speeder sleeves in black, red, yellow, green, blue, and gray are available for measuring
management.
*Standard accessory
Note: All information regarding our products, and in particular the illustrations, drawings, dimensional and performance data contained in this pamphlet, as well as other
technical data are to be regarded as approximate average values. We therefore reserve the right to make changes to the corresponding designs, dimensions and weights.
The stated standards, similar technical regulations, descriptions and illustrations of the products were valid at the time of printing. Only quotations submitted by ourselves
may be regarded as definitive.
Our products are classified as regulated items under Japanese Foreign Exchange and Foreign Trade Law. Please consult us in advance if you wish
to export our products to any other country. If the purchased product is exported, even though it is not a regulated item (Catch-All controls
item), the customer service available for that product may be affected. If you have any questions, please consult your local Mitutoyo sales office.
Our products are classified as regulated items under
Japanese Foreign Exchange and Foreign Trade Law.
Please consult us in advance if you wish to export our
products to any other country. If the purchased
product is exported, even though it is not a regulated
item (Catch-All controls item), the customer service
available for that product may be affected. If you have
any questions, please consult your local Mitutoyo sales
office.
033 0712 1 E (NS) NS, Printed in Japan
