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Sine-Bar Attachment For Machine ToolsSine-bar attachment for collets, spindles, and chucks helps machinists set up quickly for precise angular cuts that require greater precision than provided by graduations of machine tools. Machinist uses attachment to index head, carriage of milling machine or lathe relative to table or turning axis of tool. Attachment accurate to 1 minute or arc depending on length of sine bar and precision of gauge blocks in setup. Attachment installs quickly and easily on almost any type of lathe or mill. Requires no special clamps or fixtures, and eliminates many trial-and-error measurements. More stable than improvised setups and not jarred out of position readily.
Document ID
Document Type
Other - NASA Tech Brief
Mann, Franklin D.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Date Acquired
August 13, 2013
Publication Date
November 1, 1988
Publication Information
Publication: NASA Tech Briefs
Volume: 12
Issue: 10
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.

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