Is American Heritage's Invention and Technology
If you have any interest in technology, electrical, mechanical or chemical you will find fascinating stories.
I subscribe and have subscribed to many (my wife would say too many) magazines. This is by far the most interesting of all. The worst part of it is the fact it only comes 4 times a year. When an issue shows up, don't try to talk to me for several hours. It is always read cover to cover and kept for future reading and reference.
You can go onto the website above and go into the archives and read some stories to get a feel for the magazine.
Personally, I think nearly everyone who has a Sportsmobile will find this magazine worth reading.