Abstract: An optical instrument indexing device includes a riser and first and second platform. The first platform is disposed on a first side of the riser at a first position on the riser. The second platform disposed on a second side of the riser at a second position on the riser. Both the first and second platforms are indexed or indexable to align two optical instruments to a field of view.

Abstract: A post base device and system is provided. The post base device includes a first support base, a second support base, and one or more post brackets. The post brackets may include legs which attach to one of the first support base or the second support base. The post bracket may further include an opening which receives a post.

Abstract: A hanger is provided for use with a post. The hanger includes a body. The body of the hanger includes an aperture disposed in the body. A first retaining tab is disposed at a first end of the aperture while a second retaining tab is disposed at a second end of the aperture.

Abstract: An optical instrument indexing device includes a riser and first and second platform. The first platform is disposed on a first side of the riser at a first position on the riser. The second platform disposed on a second side of the riser at a second position on the riser. Both the first and second platforms are indexed or indexable to align two optical instruments to a field of view.

Abstract: An example resetting gun target includes a first curved rocking member; a second curved rocking member; a connector portion joining the first rocking member and the second rocking member and maintaining a space between the first rocking member and the second rocking member; and a central target panel attached to the connector portion and situated in the space between the first curved rocking member and the second curved rocking member. The resetting gun target may further include paddle portions respectively situated at a first end and a second end of each of the first curved rocking member and the second curved rocking member.