Polaroid film is used with conventional portable X ray equipment to locate and shoot items or objects in difficult areas. Polaroid film development time is about 20 seconds

Griffin, H. G.

Mc Clelland, G. W.

English

NASA Technical Reports Server

January 1967	 Brief 67-10008 
NASA TECH BRIEF	
-it 
NASA Tech Briefs are issued to summarize specific innovations derived from the U.S. space program, 
to encourage their commercial application. Copies are available to the public at 15 cents each 
from the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Polaroid Film Helps Locate Objects in Inaccessible Areas Quickly 
The problem: 
To locate objects in restricted or difficult areas for 
X-ray inspection in minimum time. In difficult areas, 
it is usually necessary to shoot many test shots with 
conventional X-ray film to isolate and align the item 
or object to be inspected. Conventional X-ray film 
takes approximately 35 minutes to develop. 
The solution: 
Polaroid film is used with conventional portable 
X-ray equipment to "rough in" shots of items or 
objects in difficult areas. Polaroid film development 
time is about 20 seconds. 
How it's done: 
To separate the item or object to be inspected from 
other similar items, place a small lead arrow or dot on 
the item of interest. The lead arrow or dot serves as 
an index mark for locating the item or for moving the 
X-ray equipment to obtain a desired alignment. After
location or alignment of the item, conventional X-ray 
ph6tographs are taken. 
Note: 
This method was successfully used in the radio-
graphic inspection of brazed joints in Command 
Modules. Tubing joints which were not accessible 
from inside the Module because of wire bundles and 
equipment installations were located and X-rayed 
from the outside. 
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: H. G. Griffin and G. W. McClelland

of North American Aviation, Inc.
under contract to
ManOed Spacecraft Center
(MSC-960) 
Category 02 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person 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.
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Polaroid film helps locate objects in inaccessible areas quickly

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