Dial Indicators
SERIES 2 — Standard One Revolution Type for Error-free Reading
• The one revolution dial indicator prevents the possibility of reading errors. • Proprietary Mitutoyo shock-proof mechanism is incorporated, providing improved resistance to shock due to sudden spindle retraction caused by impact. • The indicator is highly durable thanks to its oil- and water-tight design, quenched hardened stainless-steel, carbide contact point, and a grand gear made of wear- and deformation- resistant material. • Application of an anti-reflective and hard surface coating improves scale visibility along with scratch and chemical resistance. • The red dead zone in the middle of the dial face is separated from the bezel and doesn't cover the graduations. Therefore, users can always see the range where accuracy is not guaranteed even if the bezel is rotated.
One revolution type Back Plunger dial gages are also available. (Refer to pages F-58 to F-59 for details.)
2990A-10
Optional Accessories • Limit hand (2 pcs.): 21AZB195
2900A-10
• Bezel clamp: 21AZB148 (for metric type) 21RZA065* (for inch type)
*Included with ANSI/AGD models
F
SPECIFICATIONS Inch
ANSI/AGD type
ISO/JIS type
Stem ø3/8", #4-48 UNF
21AZB148
Order No.
Accuracy (in)
Range (range / rev) (in)
Repeat- ability (in)
Dial reading
Graduation (in)
Measuring force (N)
w / lug Flat-back
First 1 Rev/2.5 Rev/10 Rev Retrace
2909A-62 2909AB-62 0.0005 0.04 / 0.05 2910A-10 2910AB-10 0.0001 0.008 / 0.01
±0.0005/—/— 0.00016 ±0.0001 20-0-20 2.5 or less ±0.0001/—/— 0.0001 ±0.00003 4-0-4 1.8 or less
Metric
Stem ø8mm, M2.5x0.45 Thread
Order No.
Accuracy (µm)
Range (range / rev) (mm)
Graduation (mm)
Repeat- ability
Dial reading
Measuring force (N)
Hysteresis
Measuring range
w / lug Flat-back
1/10 Rev 1/2 Rev 1 Rev
2928A 2928AB 2929A 2929AB
0.1
4 (5)
20
— — 40 — — 8 — — 8 — — 10 — — 3 — — 3 — — 4
20
20 2-0-2 1.4 or less 3 40-0-40 1.4 or less 3 40-0-40 2.0 or less 3 80-0-80 1.4 or less 0.5 40-0-40 1.5 or less 0.5 40-0-40 2.0 or less 0.5 80-0-80 1.5 or less
0.01 0.8 (1)
5 5 5 2 2 2
3 3 3 2 2 2
2929A-62 2929AB-62 0.01 0.8 (1)
2959A 2959AB
0.01 1.6 (2)
2900A-10 2900AB-10 0.001 0.08 (0.1) 2900A-72 2900AB-72 0.001 0.08 (0.1) 2901A-10 2901AB-10 0.001 0.16 (0.2)
Upon request, we can manufacture custom types with changed graduation numbers, graduation lines, dead zones, etc. Please contact your nearest M³ Solution Center for more information. Special specifications
F-43
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