The disclosure relates to methods and apparatuses relating to a speculum. The speculum includes a handle, a first bill and a second bill, where a proximal end portion of the first bill and the second bill are coupled to an upper portion of the handle and configured to open along a first axis, a third bill and a fourth bill, where a proximal end portion of the third bill and the fourth bill are coupled to the upper portion of the handle and configured to open along a second axis substantially orthogonal to the first axis and an actuation mechanism that causes the first bill and the second bill to move between an open position and a closed position. In some embodiments, the speculum includes a locking mechanism with a rocker mechanism, a lock strip contained in a handle of the speculum, and a pawl coupled to the handle.
