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.
Federal law prohibits licensed firearms dealers from selling a shotgun or rifle to anyone under 18, or handguns to anyone under 21. Still, some states impose minimum age limits that go below these federal limits. For instance, in Vermont, itâs legal to sell a handgun or rifle to 16-year-olds.Itâs legal to sell a rifle to a 16-year-old in Maine, Alaska, Minnesota or New York. In Montana, the legal age is 14, according to the Law Center to Prevent Gun Violence, a non-profit organization that tracks state gun laws.4.ederal law prohibits licensed firearms dealers from selling a shotgun or rifle to anyone under 18, or handguns to anyone under 21. Still, some states impose minimum age limits that go below these federal limits. For instance, in Vermont, itâs legal to sell a handgun or rifle to 16-year-olds.