| http://www.w3.org/ns/prov#value | - The display showing the separation between the two objects, the height of the target, or the like can be shown in an area other than the area where the distance to the object is shown. [0109] First, the mode is set to the height-measuring mode, and the reticle 23A is set to the center between the top and the bottom of the target 5. [0110] In this height-measuring mode, the standard positions of tw
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