Pratt & Whitney Keller Type BL, Milling Machine Operator Instruction Manual 1951

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Pratt & Whitney Keller Type BL, Automatic Tracer-controlled Milling Machine Operators Instruction Manual Year (1951)      

This Manual Covers Models:
Type BL

This Manual Includes:
Installation
Lubrication
Maintenance
Electrical Operation
Operating The Machine
Keller Automatic Tracer (EL-32, Style 1 & 2)
Keller Profile Tracer –EL4-Style 1 (with Tungsten Contact Ring Assembly)
Photograph of Combination Tracer –disassembled for Adjustment Contacts
Photograph of Typical use of the Combination Tracer
This Manual Has 62 Printed Pages.
Year 1951