True Position - Mobile

Utilities

You need to know the basic dimensions of the
drawing. This will calculate them for you.
1. Put in the Tolerance according to the drawing.
2. Activate the Diameter symbol if Diameter True
Position.
3. Fill in all the maximum and minimum dimensions
from the drawing. This will calculate the mean basic
dimensions for you.
4. Fill in the Actual X and Actual Y dimensions you
measure on the part.
5. If Drawing Tolerance allows Maximum Material
Condition, activate the M symbol and fill in the
Actual Hole Diameter on the part.

0.2525-.01
0.2525+-.01
0.2525+.005-.007
The min, max and mean are automatically calculated from this. You can see the calculated mean
dimensions in parentheses.
Basic dimensions can be entered by just putting a + or - after the number, which is the equivalent
of 0.2525+0
Download True Position for iPhone, iPad, iPod Touch ios 7 or newer, at iTunes App store for free.

Calculation is automatically updated when you press Return on the keyboard or move to the next
editbox.
When True Position calculated result is in RED, the value is out of tolerance.
Maximum Material Condition - MMC
If the tolerance callout has the M symbol then you are allowed extra tolerance. This extra tolerance
comes from how much the actual size of the hole is larger than the minimum allowed size.
Short-Cut Method
For the short cut way, if you already know how much the hole is off in the X and Y direction, you
can just put the deviation from basic in the Actual X and Actual Y boxes along with the Tolerance,
and leave the Max and Min boxes blank. You can
MMC requires the min allowed diameter and the actual diameter of the hole.
Inch or Millimeter input doesn't matter as long as you use the same everywhere.
Radial or Diameter True Position.
Most tolerances on the drawings you see will have the diameter symbol in the feature control
frame. So .005 means the tolerance zone is a circle around the basic point with that diameter.
Without this symbol the .005 is a circle with that radius around the basic point - which is twice the
size.
Plus and Minus Dimensions
You can also enter dimensions in the plus and minus form to make it easier if your drawing has
this kind of dimensioning. Using only the MAX edit boxes, after the main number add plus and
minus symbol or just plus or just minus and then the second number, into the MAX dimension
box. You can also have 0.2525+.01-.005 The min, max and mean are automatically calculated from
this. You can see the calculated mean dimensions in parentheses.
Examples for Max edit box:

Download True Position for Android devices: Download from Google Play here.

Link to older Android version 1.0.2: TruePos.apk

True Position-Mobile

Utilities

You need to know the basic dimensions of
the drawing. This will calculate them for you.
1. Put in the Tolerance according to the
drawing.
2. Activate the Diameter symbol if Diameter
True Position.
3. Fill in all the maximum and minimum
dimensions from the drawing. This will
calculate the mean basic dimensions for
you.
4. Fill in the Actual X and Actual Y
dimensions you measure on the part.
5. If Drawing Tolerance allows Maximum
Material Condition, activate the M symbol
and fill in the Actual Hole Diameter on the
part.

Calculation is automatically updated when you
press Return on the keyboard or move to the next
editbox.
When True Position calculated result is in RED, the
value is out of tolerance.
Maximum Material Condition - MMC
If the tolerance callout has the M symbol then you
are allowed extra tolerance. This extra tolerance
comes from how much the actual size of the hole
is larger than the minimum allowed size.
Short-Cut Method
For the short cut way, if you already know how
much the hole is off in the X and Y direction, you
can just put the deviation from basic in the Actual
X and Actual Y boxes along with the Tolerance, and
leave the Max and Min boxes blank. You can
MMC requires the min allowed diameter and the
actual diameter of the hole.
Inch or Millimeter input doesn't matter as long as
you use the same everywhere.
Radial or Diameter True Position.
Most tolerances on the drawings you see will have
the diameter symbol in the feature control frame.
So .005 means the tolerance zone is a circle
around the basic point with that diameter.
Without this symbol the .005 is a circle with that
radius around the basic point - which is twice the
size.
Plus and Minus Dimensions
You can also enter dimensions in the plus and
minus form to make it easier if your drawing has
this kind of dimensioning. Using only the MAX edit
boxes, after the main number add plus and minus
symbol or just plus or just minus and then the
second number, into the MAX dimension box. You
can also have 0.2525+.01-.005 The min, max and
mean are automatically calculated from this. You
can see the calculated mean dimensions in
parentheses.
Examples for Max edit box:

0.2525-.01
0.2525+-.01
0.2525+.005-.007
The min, max and mean are automatically
calculated from this. You can see the calculated
mean dimensions in parentheses.
Basic dimensions can be entered by just putting a +
or - after the number, which is the equivalent of
0.2525+0
Download True Position for iPhone, iPad, iPod Touch
ios 7 or newer, at iTunes App store for free.

Download True Position for Android devices:
Download from Google Play here.

Link to older Android version 1.0.2: TruePos.apk