What is another word for double-image range finder?
Pronunciation: [dˈʌbə͡lˈɪmɪd͡ʒ ɹˈe͡ɪnd͡ʒ fˈa͡ɪndə] (IPA) 
A double-image range finder is an optical instrument used to measure the distance between two objects. It functions by creating a double image of the object being viewed and then measuring the distance between the two images. There are various synonyms for this term including binocular range finder, stereo range finder, twin-image range finder, dual-image range finder, and double-image stereoscope. These terms are often used interchangeably, but they all refer to the same type of optical instrument. They are commonly used in photography, surveying, and military operations, among other applications, to accurately determine the distance between objects.
