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

Boyle, J. V.

English

NASA Technical Reports Server

ling Hole 
September 1966	 Brief 66-10410 
NASA TECH BRIEF	
-0 
NASA Tech Briefs are issued to summarize specific innovations derived from the U. S. space 
program and to encourage their commercial application. Copies are available to the public from 
the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Alignment Tool Facilitates Pin Placement on Irregular Horizontal Surfaces 
Spirit Level
The problem: 
To devise a method of spotting and cementing 
plastic pins on irregular concave or convex surfaces 
so that they are perpendicular to a horizontal plane. 
The solution: 
An alignment tool consisting of a wood tripod with 
individually adjustable legs secured to a wood block 
in which a hole, corresponding to the diameter of the 
plastic pins, is bored vertically through the center. 
Two spirit levels welded together at a 90 0 angle on 
a horizontal plane enable the alignment tool to be 
adjusted to a true (0 0 ) vertical position.
How it's done: 
The alignment tool is placed over the work area 
with the hole in the wood block located directly over 
the point where the plastic pin is to be cemented. The 
spirit level is placed on the wood block and the tripod 
legs are carefully adjusted until a zero bubble is 
observed in each spirit level. The plastic pin is inserted 
in the wood block hole and cemented in place on 
the work area. 
Notes: 
1. The tripod legs were cut to shape from plywood, 
centered 1200 apart on the side of the wood 
block, and secured with washers and wood screws. 
(continued overleaf) 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor anyperson acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19660000409 2020-03-11T17:35:25+00:00Z
2. The spirit levels were welded together for ease 
in handling. 
3. Inquiries concerning this invention may be di-
rected to: 
Technology Utilization Officer 
Langley Research Center 
Langley Station 
Hampton, Virginia 23365 
Reference: B66-10410
Patent status: 
Inquiries about obtaining rights for the commercial 
use of this invention may be made to NASA, Code 
GP, Washington, D.C. 20546.
Source: J. V. Boyle 
(Langley-219) 
Brief 66-10410
Category 05


Alignment tool facilitates pin placement on irregular horizontal surfaces

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