Subdirectories in Rules of thumb:

• The Project Gutenberg eBook of Hawkins Electrical Guide, Number One, by Nehemiah Hawkins._files
• The Project Gutenberg eBook of On the Origin of Clockwork, Perpetual Motion Devices and the Compass by Derek J. de Solla Price_files
• The Project Gutenberg eBook of The Earliest Electromagnetic Instruments, by Robert A. Chipman._files
• The Project Gutenberg eBook of The Radio Amateur's Hand Book, by A. Frederick Collins_files
• electrics
• images

Non-image files:

File: A Rudimentary Treatise on Clocks, Watches and Bells, Edmund Beckett.pdf (Portable Document Format image)

File: abramowitz_and_stegun.pdf (Portable Document Format image)

File: notes.txt (ASCII or Unicode plain text file)

File: notes.txt~ (ASCII or Unicode plain text file)

Hypertext documents:

Link: The Project Gutenberg eBook of Hawkins Electrical Guide, Number One, by Nehemiah Hawkins..html

Link: The Project Gutenberg eBook of On the Origin of Clockwork, Perpetual Motion Devices and the Compass by Derek J. de Solla Price.html

Link: The Project Gutenberg eBook of The Earliest Electromagnetic Instruments, by Robert A. Chipman..html

Link: The Project Gutenberg eBook of The Radio Amateur s Hand Book, by A. Frederick Collins.html

Link: The Project Gutenberg eBook of The Radio Amateur's Hand Book, by A. Frederick Collins.html

Image files:

Image: IMG_20180920_152847_1.jpg

Image: Rising_circular.gif

Image: Screen Shot 2018-11-25 at 12.50.19 PM.png

Image: measman_enviro-tolerances-grayscale-FPO.jpeg

Image: right hand rule.png