pasguard

To reinforce the left arm from the shoulder to the wrist, a large L-shaped plate called a pasguard, or soprabracciale, is screwed to the threaded socket in the left elbow of the vambrace (fig. 81). The pasguard overlaps the grandguard at the shoulder and keeps the left arm in a bent position. […] the combination of grandguard, pasguard and manifer protected the rider's left side, […] [image; caption:] Fig. 81. Pasguard (soprabracciale) from the Dos Aguas garniture (27.159.4)