, 
View > Analysis Controls > Measurement Each method determines the shape of the test mask.
This button can save the current preset under a different name.
You can modify the name and the sample image of the current preset by selecting this button.
This button deletes the current preset.
Press the 
Show Mask button on the left tool bar to display the mask. Depending on the selected preset, various parameters such as number of lines, circle diameter etc. can be adjusted. Also the mask can be resized and moved by mouse.
Check this box to maximize the test mask to the whole image area. Some edit boxes get disabled then.
Press this button to move the whole test mask to the middle of the image area.
Press this button to reset the user settings and resize the test mask according to the standard.
Select the standard required by your methodology.
In special cases, it is possible to apply restrictions to the measured objects and exclude the grains based on their EqDiameter (Planimetric method) resp. Length (Intercept methods) value. This option can be used as an alternative to the button in the 
Detection 
panel.
Whenever the settings are changed, these buttons becomes enabled. You can always use the button to store the changes to the current preset, or the button to discard them.