Stock Book, Volume 4. 1872-1874
BrentArchive 198028/5/4
Serial numbers 19000-22000
Triple Achromatic Settings, Sliding
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.........................................................................No.1 ...6"x5"
..........................................................................No.2 ...81/2"x61/2"
..........................................................................No.3 10"x8"
..........................................................................No.4 12"x10"
..........................................................................No.5 15"x12"
..........................................................................No.6 18"x16"
..........................................................................No.7...22"x20"
..........................................................................No.8 25"x21"
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