Hamilton #1B gear hobber

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Subject: Hamilton #1B gear hobber
Diameter of work piece 6" maximum; Length of gear tooth 5" max.
Diametral pitch 12 max., min 280 DP
Hob spindle speeds from 109 - 1259 RPM
Spiral lead 130" max., .800" min.; Diameter of hob 1 1/4" max; width 1 1/4" max.
Distance between spindle noses 8 1/2" max., 4" min.
Approximate weight 1,000 lbs, measures 4' x 4' x 5' high