Abstract: Apparatus and methods for determining a dimension of a portion of a garment are disclosed that preferably comprise a first member having a first gage end and a slide end, and a second member co-operatively engaged with the first member. The second member has a second gage end that has at least one scale. The apparatus has a locking device for locking the first and second members, such as a screw or wing nut passed through a pair of holes in registration. In preferred embodiments, the first and second gage ends extend from the first and second members respectively at a substantially right angle so they are substantially L-shaped. It is also preferred that the second member is made of a first layer and a second layer spaced away from the first layer, so the slide end passes between the first and second layers.