Use Previous Scale; Scale By Image - Tormach CNC Scanner Manual

5.6.1

Use Previous Scale

Figure 15. Use Previous Scale
5.6.2

Scale by Image

You can use a known dimension in the field of view to scale the
scan. This dimension could be, for example:

Ruler

Drilled or, better yet, reamed hole of known diameter

Gauge block
To begin click on the "Scale by Image" icon, Figure 16. This will
bring up the scale by image operators screen (Figure 17). Proceed
as follows:
1. Scroll the machine to place the small red circle between the 2 scale points you will be using.
Make sure both are visible.
2. Select scale type, linear or circle.
3. Enter your calibration distance and select the appropriate units. (Note: If using scale by circle
enter the diameter, not the radius as the screen says.)
4. Click on "Set First Point" and use the crosshairs to place the first point by clicking on the image.
5. Click on "Set Second Point" and repeat.
6. Click "Next" and then "Start" to start your scan.
Tormach® CNC Scanner
CNC Scanner
This option, shown in Figure 15, reuses the previously defined scale.
The scale will only be correct if the focal plane and magnification has
not been changed from the previous scan. It can be useful for:

Repeating a scan

Comparing nearly identical objects; i.e., a series of coins. This
will ensure the scale remains identical in each image.
21
Figure 16. Scale by Image
UM10138_0712A