Norman Lathrop Enterprises | Norman Lathrop Enterprises
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.


A BASIC program that generates Mohr's Circle for stress analysis.
BYTE Oct 1982 (v.7#10) pg. 312

Hardness testing. A review of some of the common methods of testing the hardness of metal samples. Includes an overhead transparency master.
INDUSTRIAL EDUCATION Apr 1979 (v.68#4) pg. 8

Falling dart impact testing. How to build an impact tester from angle iron and plastic pipe and how to use it once it's built.
INDUSTRIAL EDUCATION Nov 1979 (v.68#8) pg. 58

Shop-made hardness tester for metalworkers. A metal ball and a length of clear plastic tube form a "drop tester" to determine the hardness of metals.
POPULAR MECHANICS Feb 1980 (v.153#2) pg. 80