Calipers Small 208×320 Medium 416×640 Large 666×1024 Download Tiff Original 1560×2400 | (664.3 KB) Description "A kind of compass for measuring the diameter of round bodies." — Williams, 1889 Keywords calipers, diameter, instrument, measure, science Galleries Chemistry Apparatus Source: H. L. Williams The World's Cyclopedia (New York: World Manufacturing Co, 1889) 94
