A speculum includes upper and lower members and a linear support member. The upper member includes an upper blade. The lower member includes a lower blade and a handle portion. The lower blade includes a support structure at a proximal end thereof which extends vertically on the right or left side of the lower blade, and a handle portion extending downwardly from the lower blade and defining a vertical track. The linear support member has a proximal end pivotally connected to the upper blade, a distal end, and an elongated body between the proximal and distal ends. The elongated body slidably engages the vertical track of the handle portion. The linear support member is formed with a hidden slot which slidably receives the support structure of the lower blade.