Yamaha 3/4 violin and a 4/4 violin is their physical size and dimensions; the 4/4 (full size) is larger and generally intended for adults and older teens, while the 3/4 is a fractional size for children or small-handed adults.
General Specifications Comparison
The core construction materials and quality of fittings are generally the same across different sizes of the same model, such as the popular Yamaha V5SC series. The key distinctions lie in the overall dimensions and scale length.
Specification Yamaha 3/4 Violin Yamaha 4/4 Violin
Intended User Age Approx. 10-12 years Approx. 12+ years/Adults
Approx. Body Length ~335mm ~355mm
Approx. Scale Length ~310mm (nut to bridge) ~330mm (nut to bridge)
Approx. Bow Length ~68.5cm (27") ~74.25cm (29.25")
Top Material Solid Spruce Solid Spruce
Back & Sides Material Solid Maple Solid Maple.