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METRIC ANSI/AGD Dial Indicators
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Technical Data:
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Series A and N-Group 0
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Where available space prohibits the use of a larger dial indicator.
Product Brochure
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| Measuring Range |
Resolution |
Dial Style w/0 RC |
Range per Revolution |
Accuracy |
Order No. |
Dial: approx. 32mm dia. with soft yellow tint mm Series N
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| 0.250mm |
0.002mm |
0-5-0 |
0.100mm |
±0.002mm |
N1/2O |
| 1.250mm |
0.005mm |
0-25-0 |
0.500mm |
±0.005mm |
N3I |
| 2.500mm |
0.0010mm |
0-50-0 |
1.00mm |
±0.010mm |
N6I |
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Series B and O-Group 1
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Product Brochure
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| ANSI/AGD Group |
Mahr Style |
A |
B |
C |
D |
E |
| 1 |
B/O |
42.86mm / 1.688inch |
41.28 / 1.625inch |
38.10mm / 1.5inch |
15.88mm / .625inch |
8.73mm / .344inch |
| 2 |
C/P |
57.15mm / 2.25inch |
50.80 / 2inch |
52.39mm / 2.063inch |
18.26mm / .719inch |
8.73mm / .344inch |
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| Measuring Range |
Resolution |
Dial Style w/0 RC |
Dial Style w/RC |
Range per Revolution |
Accuracy |
Order No. w/o Rev Counter |
Order No. w/Rev Counter |
Dial: approx. 45mm dia. with soft yellow tint mm Series O
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| 0.500mm |
0.002mm |
0-10-0 |
0-20 |
0.200mm |
±0.004mm |
01l |
01l-RC |
| 1.250mm |
0.005mm |
0-25-0 |
0-50 |
0.500mm |
±0.0005mm |
03l |
03I-RC |
| 2.500mm |
0.0010mm |
0-50-0 |
0-100 |
1.000mm |
±0.010mm |
08l |
08l-RC |
| 6.250mm |
0.0025mm |
0-125-0 |
0-250 |
2.500mm |
±0.025mm |
08l |
08l-RC |
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Series C and P Group 2
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Product Brochure
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These indicators are normally furnished with continuous dial (with R.C.) or + on right balance dial |
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| Dial: approx. 2.250inch dia. with soft-green tint Inch Series C |
| Measuring Range |
Resolution |
Dial Style w/0 RC |
Dial Style w/RC |
Range per Revolution |
Accuracy |
Order No. w/o Rev Counter |
Order No. w/Rev Counter |
Dial: approx. 57mm dia. with soft yellow tint mm Series P
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| 0.500mm |
0.002mm |
0-10-0 |
0-20 |
0.200mm |
±.0.002mm |
P1l |
P1l-RC |
| 1.250mm |
0.005mm |
0-25-0 |
0-50 |
0.500mm |
±.0.005mm |
2015793 |
2014817 |
| 2.500mm |
0.010mm |
0-50-0 |
0-100 |
1.000mm |
±0.010mm |
2015794 |
2014818 |
| 5.000mm |
0.020mm |
0-100-0 |
0-200 |
2.000mm |
±0.020mm |
2015795 |
2014819 |
Super Sensitive Type (mm)
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| 0.250mm |
0.001mm |
0-5-0 |
0-10 |
0.100 |
±0.002 |
P1/2l |
P1/2l-RC |
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Series D and Q Group 3
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Product Brochure
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These indicators are normally furnished with continuous dial (with R.C.) or + on right balance dial (w/o R.C.), lug back, and .18” by .250” long contact.
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| Measuring Range |
Resolution |
Dial Style w/0 RC |
Dial Style w/RC |
Range per Revolution |
Accuracy |
Order No. w/o Rev Counter |
Order No. w/Rev Counter |
Dial: approx. 70mm dia. with soft yellow tint mm Series Q
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| 0.500mm |
0.002mm |
0-10-0 |
0-20 |
0.200mm |
±0.002mm |
Q1l |
Q1l-RC |
| 1.25mm |
0.005mm |
0-25-0 |
0-50 |
0.500mm |
±0.005mm |
Q3I |
Q3I-RC |
| 2.500mm |
0.010mm |
0-50-0 |
0-100 |
1.000mm |
±0.020mm |
Q6I |
Q6I-RC |
| 5.000mm |
0.020mm |
0-100-0 |
0-200 |
2.000mm |
±0.020mm |
Q8I |
Q8I-RC |
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Series E and R Group 4
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Product Brochure
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| ANSI/AGD Group |
Mahr Style |
A |
B |
C |
D |
E |
| 3 |
D/Q |
69.85mm / 2.75inch |
53.98mm / 2.125inch |
65.09mm / 2.563inch |
15.88mm / .625inch |
8.73mm / .344inch |
| 4 |
E/R |
92.08 / 3.625inch |
65.09mm / 2.563inch |
87.31mm / 3.438inch |
15.88mm / .625inch |
8.73mm / .344inch |
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| Measuring Range |
Resolution |
Dial Style w/o RC |
Dial Style w/RC |
Range per Revolution |
Accuracy |
Order No. w/o Rev Counter |
Order No. w/Rev Counter |
Dial: approx. 92mm dia. with soft yellow tint mm Series R
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| 0.500mm |
0.002mm |
0-10-0 |
0-20 |
0.200mm |
±0.002mm |
R1l |
R1l-RC |
| 1.250mm |
0.005mm |
0-25-0 |
0-50 |
0.500mm |
±0.005mm |
R3l |
R3l-RC |
| 2.500mm |
0.010mm |
0-50-0 |
0-100 |
1.000mm |
±0.010mm |
R6l |
R6I-RC |
| 5.000mm |
0.020mm |
0-100-0 |
0-200 |
2.000mm |
±0.020mm |
R8l |
R8l-RC |
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Features:
- Proven for the most demanding applications
- Superior design and serviceability
- Unmatched customer and technical support
- Catalog and customized styles
- Full range of accessories to suit virtually every need
- Unit construction, removable movement ... saves repair/clean ing time and maintenance costs
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- Hardened gears and stainless steel racks provide lasting pro tection against indicator failure due to shock or wear
- Jeweled bearings resist friction, add to longer indicator life
- Skeletonized, hobbed gears for more sensitive response, superior indicator accuracy with minimal hysteresis error
- Soft-tinted dials (green, inch, or yellow, metric) minimize eye strain
- Special steel alloy, balanced dial hand affords no-shift, precise reading
- Controlled rack and pinion mesh eliminates slope for precise response and reading
- Smooth-adjusting bezels for easy setup
- Positive pressure pull-back spring ... less maintenance
- Compliance with ANSI/AGD dimensional and accuracy specifications
- Many models employ stainless steel stem for added durability
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Since modern manufacturing involves a wide range of tolerances, choosing a dial indicator might be difficult, especially since the number of indicators available is so vast. The following guidelines were prepared to assist you in selecting the right model for your application. Consider four characteristics when selecting a dial indicator:
• Minimum Graduation Value — value of the smallest graduations marked on the dial. From several different values available from Mahr Inc., select the one which is closest to 10% of the tolerance spread of the work you are measuring. This assures that the tolerance will span about ten divisions of the dial value of the smallest graduations marked on the dial. From several different values available from Mahr, select the one which is closest to 10% of the tolerance spread of the work you are measuring. This assures that the tolerance will span about ten divisions of the dial
• Size — represents the bezel diameter. Make your selection on the basis of space available for the indicator and the distance from which it will be viewed. Choose the size that offers you the best readability and is the proper size for your fixture. Mahr's "C" size bezels (ANSI/AGD Group 2), which have a diameter of 2-1/4in, are the most popular.
represents the bezel diameter. Make your selection on the basis of space available for the indicator and the distance from which it will be viewed. Choose the size that offers you the best readability and is the proper size for your fixture. Mahr's "C" size bezels (ANSI/AGD Group 2), which have a diameter of 2-1/4in, are the most popular.• Range per Revolution — represents the distance the spindle travels with one complete revolution of the dial hand. From the dials available in the size and minimum graduation value you chose, select the range per revolution which allows the tolerance spread to occupy 1/10 to 1/4 of the dial.
represents the distance the spindle travels with one complete revolution of the dial hand. From the dials available in the size and minimum graduation value you chose, select the range per revolution which allows the tolerance spread to occupy 1/10 to 1/4 of the dial.• Total Range — the maximum distance over which the indicator spindle can travel. Usually, this represents 2-1/2 revolutions of the hand, which is adequate for most needs. Sometimes, however, this may not be adequate for your application and a special total range may be necessary. Your tolerance spread is .006in. You have chosen an ANSI/AGD Group 2 (Mahr "C" Size) dial with a minimum graduation value of .0005in. Mahr offers four indicator types in this size and minimum graduation value. Of these, type C5M has a range per revolution of .030in which is about midway between your tolerance extremes. You selected a C5M indicator. Your total range, however, needs to be at least .200in so the spindle can clear the lip of your part. But, the longest range available in the C5M indicator you need is only .075in. Special ranges up to .400in are available for this indicator type. Select the closest range for your application (for Model C5M, you would select .250in). If the range you need is not listed under the "Special Ranges" category, contact Mahr Inc. Chances are we can supply the range you need.
the maximum distance over which the indicator spindle can travel. Usually, this represents 2-1/2 revolutions of the hand, which is adequate for most needs. Sometimes, however, this may not be adequate for your application and a special total range may be necessary. Your tolerance spread is .006in. You have chosen an ANSI/AGD Group 2 (Mahr "C" Size) dial with a minimum graduation value of .0005in. Mahr offers four indicator types in this size and minimum graduation value. Of these, type C5M has a range per revolution of .030in which is about midway between your tolerance extremes. You selected a C5M indicator. Your total range, however, needs to be at least .200in so the spindle can clear the lip of your part. But, the longest range available in the C5M indicator you need is only .075in. Special ranges up to .400in are available for this indicator type. Select the closest range for your application (for Model C5M, you would select .250in). If the range you need is not listed under the "Special Ranges" category, contact Mahr Inc. Chances are we can supply the range you need.
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If your tolerance spread is .006in (±.003in), then, the most suitable minimum graduation value is .0005in.
Your tolerance spread is .006in. You have chosen an ANSI/AGD Group 2 (Mahr "C" Size) dial with a minimum graduation value of .0005in. Mahr Inc. offers four indicator types in this size and minimum graduation value. Of these, type C5M has a range per revolution of .030in which is about midway between your tolerance extremes.
You selected a C5M indicator. Your total range, however, needs to be at least .200in so the spindle can clear the lip of your part. But, the longest range available in the C5M indicator you need is only .075in. Special ranges up to .400in are available for this indicator type. Select the closest range for your application (for Model C5M, you would select .250in). If the range you need is not listed under the "Special Ranges" category, contact Mahr Inc. Chances are we can supply the range you need.
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