They are also known as the black truss markings. They provide a quick visual for the tape user and speed up the measuring process. Originally, 19.2 inches was used in metric layouts. Dividing 5 into 96 inches (8 feet) gives 19.2 inches, which yields five trusses per sheet. The black arrow in the photo to the right points directly at the black diamond located on 19.2. The red stud markings every 16 inches allow for a standard layout of six studs per 8-foot (96) section.
1 Minors under 18 must be accompanied by an adult at all times in the range and store. 2  You must be 21 years old to shoot a handgun & 18 years old to shoot a long gun without being accompanied by a parent or legal guardian.
Fireworks can be shot between 10 a.m. and midnight most days of the year. The hours are extended to 2 a.m. on July 3 and July 4, and New Yearâs Eve and New Yearâs Day. Fireworks canât be shot within 100 yards of a gas station, fuel-related industries, such as a refinery, or a nuclear power facility.