First, open the program and plug in your microscope so the image is displayed.
Next. click on the ruler-image button to the lower right (indicated in picture by red arrows).
The measurement window will open.
Depending on whether you are using high or low power, check the corresponding box at the top. In this example, low power has been selected.
With your mouse, place your cursor over the first point of the object to be measured. Click your mouse. A blue pin will now mark the spot.
Move the cursor to the second point. Click again. A red pin will mark the second spot. The window will display the distance between the points in mm to two digits.
NOTE: The measurement option with the Digital Microscope Suite included with the Handheld Digital Microscope (HDM) must be used at a fixed distance. Place your microscope right on top of the specimen so that the distance to the specimen is the same as the entrance of the clear nosepiece or bezel. The measurement tool will now indicate correct scales for you. You can’t get an accurate measurement by raising the microscope, whether it’s handheld or in the supplied clamp.
However, you can extend the use of the measuring tool by taking a known length and measuring it at an arbitrary height. This number is then used as a scale factor to find distances at that height. For example, the HDM is lifted above a surface at some height at the low-power setting of the tool. A 10mm ruler measures 4.42mm long with the tool at this height. Now another measurement is taken of a small bead while the microscope is at the same height. It measures 2.33mm. The true size of the bead is found by proportion: 2.33mm/4.42mm times 10 or 5.27mm.