MicroLinks UM12 - user manual - Manual (Page 52)

Microscope Software manual http://www.ViTiny.com
52
Copyright © 2008-2014 MicroLinks Technology Corp.
The more precise ruler, the more accurate measurement can be obtained under high
magnification. The difference of using “metal ruler” and “calibrator”:
 When the magnification is high, use the calibrator can easily and accurately
knows the scale range.
 When the magnification is high, metal ruler is less accurately than a
calibrator.
 When the magnification is low, a metal ruler can be suitable.
7. Calculate scale rang
First, the scale setting must calculate the horizontal and vertical scale range,
the following has several steps to decide the scale range, suggested that the
windows size adjust 640*480 the single windows：
 To decide measure distance between machine and observation objects.
 To adjust the focus to see the image as clear as it can.
 Calculate the observation video image of horizontal and vertical scale.
Calculate the range shown in Fig.5-33.
After setup the horizontal and vertical scales, the machine, the observation
distance and focus are not allow to readjustment.
Fig.5-33 Horizontal and vertical measurement range
8. Calibrate “non-contacted” scale
 Non-contacted scale: To hold the machine by the stand, fix the device lens
above calibrator or ruler for distance, it can observe as low magnification.
If the device lens is close to the calibrator, it can observe as high
magnification.