Bowers Group Trimos Mestra Height Gauges - Manual (Page 17)

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6.9 Difference between 2 measurements
The Calc mode allows to calculate the distance between the last 2 surface or centerline distance
measurements. To be able to use this mode, perform at least 2 surface measurements or 2 centerline
distance measurements.
Difference between 2 surfaces
1. Perform the measurements of surfaces H1 and H2.
2. Press the Calc key.
3. The difference between H1 and H2 (D) will be displayed
and stored in the buffer.
Difference between 2 centerline distances
1. Perform the measurement of centerline distances E1 and
E2.
2. Press the Calc key
3. The difference between E1 and E2 (D) will be displayed
and stored in the buffer.
When calculating the difference, the instrument will take all available digits into consideration
(= maximum resolution). When the maximum resolution is not in use, the result can differ of
one digit in reference to the subtraction of the displayed values (rounding off error).
Example: Max resolution = 0.0001: 10.0054 – 5.0045 => Calc displayed 5.0009
Same calculation with resolution = 0.001: 10.005 – 5.005 => Calc displayed 5.001!
6.10 Tolerance limits mode
The Tol mode allows to measure parts in series and to compare the measured surface, diameter and
centreline distance values to the previously entered tolerance limit values. The tolerance position is
indicated by luminous LED's.
6.10.1 Programming of tolerance limit values
1. Activate the tolerance input mode by pressing the Tol
key longer than 2 seconds. The menu will be displayed.
> 2 sec.
2. Use the cursor keys for selection of the required field to
activate the tolerance input mode (surface, diameter or
centerline distance).
Surfaces
Diameter
Centerline