210mm
The recommended spacing between studs in a wall is typically 16 inches on center.
The standard spacing between wall studs is typically 16 inches on center.
The recommended spacing between studs for standard wall construction is typically 16 inches on center.
The recommended spacing between deck joists for optimal structural support is typically 16 inches on center.
The recommended spacing between deck joists for optimal support and stability is typically 16 inches on center.
The recommended deck spacing between joists for optimal structural support and durability is typically 16 inches on center.
50 cm http://www.usa-gymnastics.org/gymnastics/guide.html#app
The standard distance between studs in a typical wall is 16 inches on center.
For the NC test I used google earth and my closest DVM that has the motorcycle course dots painted on the ground. You can easily see these dots in google earth and you can use the ruler tool in google earth to measure the distance between the dots. The distance between the center dots is 14 feet and the dots that are to the left and right are 4 feet from the center line of dots. Diagrams of the actual skills tested are at the end of the of the NC Motorcyclist Handbook.
Pitch
Pitch is center to center spacing of an intermittent weld.
The recommended spacing for ceiling studs is typically 16 inches on center.