Reflection Goniometer Small 226×320 Medium 453×640 Large 724×1024 Download Tiff Original 1697×2400 | (1.3 MB) Description "Goniometer. An instrument for measuring solid angles, or the inclination of planes, particularly the angles formed by the faces of crystals." -Whitney, 1911 Keywords crystals, incline, math tool, measure angle, measurement, reflectiing goniometer Galleries Miscellaneous Math Tools Source: William Dwight Whitney The Century Dictionary: An Encyclopedic Lexicon of the English Language (New York, NY: The Century Co., 1911)
