Scalpel Graduated Handle No. 4: Overall Length 5", New Weight of Instrument 0.71 oz. Ruler on one side of Handle Range 0cm-6cm. Horizontal 11 Lined Serrated Professional Grip on Both sides. Surgical scalpels are amongst the most important instruments which are used by all doctors in the field of medicine irrespective of which division they work in. Standard No. 4 Handle is provide additional reach and depth of surgical fields. The Professional Range of blades and handles are produced with Craft 'Professionals' and enthusiasts in mind.