Parlor guitars are often confused with ¾ scale acoustic guitars because of the overlaps in design. Parlor guitars have a narrow body with a broad waist – the exaggerated pear-shaped body. They also have 12 frets to the body. The "3/4-scale acoustic guitars" have a different scale length (shorter) and body shape. One good look at the Ibanez PN15 (parlor guitar) and Little Martin (3/4 scale acoustic guitar) should be enough to distinguish between the two. That said, there is no official rulebook that defines the dimensions for these types of guitars (check out our full guide on types of guitars). You are bound to find a few variations in the dimensions based on the make/model/manufacturer.