Dial Indicators
SERIES 2 — Standard One Revolution Type for Error-free Reading, Lightweight Type
• The one revolution dial indicator (lightweight type) 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. • Lightweight type (70 g). • It is highly durable thanks to a hardened stainless-steel stem and spindle, carbide probe, and a large gear made of wear- and deformation-resistant materials. • 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.
Optional Accessory • Limit hand (2 pcs.): 21AZB195
2972AB
F
SPECIFICATIONS Inch
ANSI/AGD type
ISO/JIS type
Stem ø3/8", #4-48 UNF
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
2976AB 2977AB 2978AB
— — —
0.0005 0.02 (0.028) 0.0005 0.04 (0.055) 0.001 0.06 (0.079)
±0.0005/—/— 0.00016 ±0.0001 10-0-10 1.4 or less ±0.0005/—/— 0.00016 ±0.0001 20-0-20 1.4 or less ±0.001/—/— 0.0002 ±0.0002 30-0-30 1.4 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
2971AB 2972AB 2973AB
— — —
0.01 0.5 (0.7) 0.01 1 (1.4) 0.02 1.6 (2)
5 5 8
— — 8 — — 8 — — 16
3 3 6
3 25-0-25 1.4 or less 3 50-0-50 1.4 or less 5 80-0-80 1.4 or less
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-49
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