NASA NTRS · 19660000409
Alignment tool facilitates pin placement on irregular horizontal surfaces
Abstract
Alignment tool facilitates spotting and cementing plastic pins on the true vertical to irregular concave and convex surfaces. The tool consists of a wood tripod with individually adjustable legs, a wood block with a hole for placing the pins and two spirit levels at a 90 degree angle for easy alignment.
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Boyle, J. V.. 1966-09-01. Alignment tool facilitates pin placement on irregular horizontal surfaces. https://ntrs.nasa.gov/citations/19660000409
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