.TOOL. VI Basic Operations3 Measuring Two-point Distance or Entering Information—TOOL Menu- 80 -3.5.2 Using a Scale to Measure the Subject SizeYou can display a scale on the screen and use it to measure an approximate size of the subject.1) Select the calibration value you want to use from s1 through s7 .2) Press Scale , and a scale matched to the selected calibration value will be displayed.3) Press Scale again to erase the displayed scale.A scale normally is displayed on only the screen, and is not drawn in the saved or printed image.If you select the Scale check box on the REC menu, two scales, one vertical and one horizontal,will be drawn in the lower right part of the saved or printed image.NOTE:* Depending on the calibration value (such as when the screen-full length iscalibrated as being equal to 1 mm), the system may not be able to displayvalues. In such a case, the value is displayed as “######” and you mustchange the unit of the calibration value from “1 mm” to “1000 μm,” etc.* Normally, values with these functions are labeled with the units "nm," "μm,""mm," or "cm." However, if calibration values are selected after inch/milconversion, they are labeled "mil," and an "E" is indicated, representing inchconversion.* If you perform an electronic zoom while using this function, the screendisplay will reflect the zoom magnification.* If you change the optical zoom of the digital imaging head while using thisfunction with the Nikon 80i/90i microscope connected to your system, thescreen display will reflect the zoom magnification.* If you change the objective while using this function, and if the microscopeconnected to your system is the Nikon 80i/90i microscope using a motorizednosepiece or intelligent nosepiece, the screen display will changeaccordingly.* If the microscope connected to your system is the Nikon 80i/90i microscopeusing a motorized nosepiece or intelligent nosepiece, note that eachcalibration value call number is linked to the hole number of the nosepiece.This means you cannot change calibration values by selecting s1 throughs7 . Calibration values are automatically changed when you change theobjective.