For the mechanically minded geek in your life

[testifyoncruises]

Google Books now has all 137 years of Popular Science scanned with the original contraptions and advertisements.

http://books.google.com/books/serial/wzsEAAAAMBAJ?rview=1

 

[Liberty Belle]

Very cool! I'll have to show my sons that. They'll both love it!

 

[minniebeth]

Thanks for posting! DS will LOVE this!

 

[binny]

Thank you!!!