Brass Scarificator Roughly cube shaped scarifactor made of brass, presented by William Geoffrey Harvey. On the base appear four parallel lines which present small individual blades once the lever on the top of pushed to the opposite side. Beside this lever is a knob that can be twisted to adjust the height of the overall object, and subsequently the height of the blades. The scarifactor claimed to be a less painful bloodletting technique, by creating multiple cuts simultaneously with narrow blades and quick punctures to the skin, The patent for the scarificator was awarded to George Tiemann in 1834. This particular example was made and sold by Thompson & O'Neill, located at 7 Henry Street, Dublin. 1850-1899