Jolly Balance Small 131×320 Medium 262×640 Large 419×1024 Download Tiff Original 981×2400 | (355.3 KB) Description "An apparatus designed to measure the elongation or contraction of a spring when attached to two scale-pans, with one immersed in water." -Avery 1895 Keywords apparatus, balance, jolly, scale-pans, two Galleries Chemistry Apparatus Source: Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 178
