A folding multipurpose hand tool including folding pliers or scissors and other tool blades and bits. A semiconductor energy detector includes a plurality of diffusion regions of a second conductivity type comprised of a semiconductor of a second conductivity type and a diffusion region of the first conductivity type comprised of a semiconductor of the first conductivity type higher in impurity concentration than the semiconductor substrate. The invention provides for a flat bag web, the upright edge strip portions of which are caused to be folded down over respective opposed carrier chains. A contrasting member is disposed on at least a portion of the hub assembly, so that when blood enters the flashback chamber, the contrasting member provides a high-contrast background when viewed through the window section. The actuator unit may move the intermediate shaft between a first position in which the intermediate shaft transmits torque to the output shaft and a second position in which the intermediate shaft does not transmit torque to the output shaft.