<p>A material trimmer for trimming sheet material having a blade slidingly engageable with the sheet material along a cutline and an indicator indicative of the approximate location of the cutline. The indicator provides for ready and correct orientation of the sheet material within the material trimmer. In one set of embodiments, the blade is attached to a carriage or trolley adapted for sliding translation along a portion of a guide. The guide is operatively connected to a base. The indicator is disposed in relation to a slot provided in the guide overlaying the sheet material orientated on the base. The indicator may comprise a cord operatively connected to the guide. The tension of the indicator is maintained or adjusted through manipulation of one or more tensioners operatively connected to the guide.</p>
