Micrometers
1419032586
Coolant Proof Micrometers SERIES 293 — IP65 Digimatic Micrometer
Optional Accessories For additional accessories refer to pages B-8, and B-70 - B76 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. Models equipped with this function have an output port for transferring measurement data to a Statistical Process Control (SPC) system. * Only models with the data output function Auto power ON/OFF : The reading on the LCD disappears after this instrument is idle for about 20 minutes, but the reading and measurement mode are retained. Turning the spindle causes the reading to reappear. 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 indicator appears well before the micrometer becomes unusable. Function lock : Functions Origin point setting (ABS measurement system): Resets the ABS origin at the current spindle position to the minimum value of the measuring range and switches 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 : The function that holds the display of value is useful when it is difficult to see the measured value at the measurement point. When the function is cancelled, the previous zero-set point or a measured value with reference to the origin is displayed. Data output *: to ABS mode. Zero-setting :
• Accurate and highly environmentally resistant, assisting with many types of measurements. • Ratchet thimble provides better operability for one-handed operation. • Oil-resistant material used for all plastic parts.
• Models equipped with a Digimatic output port can form part of a statistical process control or
networked measurement system. • Measuring faces: Carbide tipped.
B
293-330-30
SPECIFICATIONS Inch/Metric Order No.
Range (in)
Parallelism (in)
Flatness (in)
Measuring force (N)
Resolution Accuracy* (in)
Remarks
0.0001 in /0.001 mm
— 293-349-30*
±0.0001
7 - 12 Ratchet thimble 5 - 10 Ratchet stop 7 - 12 Ratchet thimble 5 - 10 Friction thimble 5 - 10 Ratchet thimble 7 - 12 Friction thimble 7 - 12 Ratchet thimble 5 - 10 Ratchet stop 7 - 12 Ratchet thimble 5 - 10 Ratchet stop 7 - 12 Ratchet thimble
293-330-30 293-340-30* 293-334-30 293-344-30* 293-335-30 293-348-30* 293-331-30 293-341-30*
0 - 1
0.00004
±0.00005
0.000012
293-336-30
—
1 - 2
0.00005 in /0.001 mm
— 293-345-30*
293-332-30 293-342-30*
2 - 3
— 293-346-30*
±0.0001 0.00008
293-333-30 293-343-30*
3 - 4
— 293-347-30*
Metric
Range (mm)
Resolution (mm)
Parallelism (µm)
Flatness (µm)
Measuring force (N)
Constant measuring force
Order No.
Accuracy* (µm)
293-230-30 293-240-30* 293-234-30 293-244-30* 293-231-30 293-241-30* 293-235-30 293-245-30* 293-232-30 293-242-30* 293-236-30 293-246-30* 293-233-30 293-243-30* 293-237-30 293-247-30*
5 - 10 Ratchet stop 7 - 12 Ratchet thimble 5 - 10 Ratchet stop 7 - 12 Ratchet thimble 5 - 10 Ratchet stop 7 - 12 Ratchet thimble 5 - 10 Ratchet stop 7 - 12 Ratchet thimble
0 - 25
±1
1
25 - 50
0.001
0.3
50 - 75
Rachet Stop (Ratchet speeder)
±2
2
75 - 100
• Power source: SR44 battery (1 pc.), 938882 included as standard * E MPE (ISO 3611:2023 and ASME B89.1.13-2013) *1 293-349-30 does not include an Inspection Certificate 48.5 a L 25 2 (Minimum measuring length)
62.9
Rachet Thimble (1-piece thimble & speeder)
c
DIMENSIONS
Ratchet stop
Ratchet thimble type
Range (mm)
L
a
b
c
a
L
25 2
48.5
62.9
63.6
(Minimum measuring length)
0 - 25 0 6.5 25 25 - 50 25 7.3 32.5 50 - 75 50 10.1 47 75 - 100 75 11.5 60 0 - 25 0 6.5 25 25 - 50 25 7.3 32.5
c
Friction Thimble (No ratcheting action)
2.5
Measuring range: 100 mm or less
Unit: mm
63.6
a
L
25 2.5
14.5 2
49.5
62.9
c
B-7
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