A comprehensive reference database of dimensioned drawings documenting the standard measurements and sizes of the everyday objects and spaces
reference
Dimensions.Guide
Design principles
by @adactio
Design Principles
A wide-ranging collection of design principles.
Ian’s Shoelace Site: Lacing Shoes
Comprehensive doesn’t even begin to cover the amount of information on this site about tying your shoes.
Screensiz.es
A table showing “the screen specifications of the most popular devices and monitors currently on the market.”