Weights of Litho Stones

litho_
G. Ruse and C. Straker. Printing and its Accessories. London: S. Straker & Son., 1860. Robertson Davies Library, Massey College. University of Toronto.

This is a pretty handy chart if you are considering purchasing a litho stone, or even picking one up to move around.  For example, a 16 x 12 inch stone weights 43 pounds per inch of thickness. This was pasted onto the inner face of the front board of Printing and its Accessories from Massy College.  Another reminder that many printed books contain unique, owner added paratextual information.

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