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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. |
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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 Federal 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 |
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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 |
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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 |
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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 |
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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 Federal 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 |
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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 Federal, 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 Federal, 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 Federal'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 Federal'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 Federal "C" Size) dial with a minimum graduation value of
.0005in. Mahr Federal 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 Federal. 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 Federal "C" Size) dial with a
minimum graduation value of .0005in. Mahr Federal 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 Federal. 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 Federal "C" Size) dial with a
minimum graduation value of .0005in. Mahr Federal 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 Federal. Chances are we can supply
the range you need.
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