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telestereoscope
telestereoscope n. 
/ˌtɛlᵻˈstɪərɪə(ʊ)skəʊp/, /ˌtɛləˈstɪriəˌskoʊp/ [after German Telestereoskop (H. Helmholtz 1857, in Annalen der Physik 102 167)] a binocular instrument consisting of two (sets of) mirrors or lenses set apart from one another, so as to allow distant objects or scenes to be viewed in relief; cf. stereoscope n. 1.
Brit. /ˌtɛlᵻˈstɛrɪə(ʊ)skəʊp/
, /ˌtɛlᵻˈstɛrɪə(ʊ)skəʊp//ˌtɛlᵻˈstɪərɪə(ʊ)skəʊp/U.S. /ˌtɛləˈstɛriəˌskoʊp/
, /ˌtɛləˈstɛriəˌskoʊp//ˌtɛləˈstɪriəˌskoʊp/ΘΚΠ
the world > physical sensation > sight and vision > optical instruments > instruments for observing > [noun] > stereoscope
stereoscope1838
phantascope1849
lenticular stereoscope1852
stereomonoscope1858
telestereoscope1858
stereophantasmascope1865
stereo1876
stereophantascope1890
tropostereoscope1900
kalloscope1901
rotoscope1907
1858 tr. H. Helmholtz in London, Edinb., & Dublin Philos. Mag. 4th Ser. 15 20 By means of a little instrument which I have named the telestereoscope [Ger. Telestereoskop], a portion of the advantage possessed by stereoscopic photographs may also be realized while looking directly at a landscape.
1887 Encycl. Brit. XXII. 541/1 Von Helmholtz invented the Telestereoscope, an instrument which places as it were the point of view of both eyes wide apart.
1945 E. G. Boring Psychol. for Armed Services ii. 43 It [sc. the range finder] would then be acting as a simple telestereoscope.
2011 B. Rogers in L. R. Harris & M. R. M. Jenkin Vision 3D Environments iv. 72 With these cautionary comments in mind, how should we understand the perception of the world viewed through a telestereoscope?
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