Abstract: Methods, systems and apparatuses for rotational viewing systems for optical and/or other measuring equipment are disclosed. The rotational viewing device includes a housing having an interface end opposite a viewing end. The housing has one or more bends between the interface end and the viewing end, an internal mirror, and one or more rotatable joints or connections allowing at least part of the housing to be rotated in a plane parallel or orthogonal to an optical axis of an apparatus to which the viewing device interfaces at the interface end. The rotational viewing device also includes an eyepiece, located at or near the viewing end.

Abstract: Removable and/or detachable viewing devices for optical and/or other measuring equipment and methods of making and using the same are disclosed. The viewing device includes a housing, an eyepiece, and an attachment mechanism configured to releasably or detachably connect the viewing device to an optical measuring instrument. An optical measuring system includes an optical measuring instrument and the viewing device detachably connectable to the optical measuring instrument. The optical measuring kit may include one or more caps or plugs detachably connectable to the opening of the optical measuring instrument and/or the interface end of the viewing device.