The Artizan . A, B. Jiase. Line about Zf*A a,7iH 8, -Mirrors. C, Telescope. D, Ad/usliny Screw /or Tiero .?,ff- do do for Terlicality; .ff. Support fir , Ad/tzsUng Lerer. flele . The Bar A .3 is enclosed in To .Ceep out ejclra/ieous light. II 1 jft$\ ?k=L ^. 1 1 ifrren side. ELEVATION - \i C1« P-J HI

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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology