7.2.4 Horizontal arm type CMM
The horizontal arm type CMM has a horizontal arm that moves in the horizontal
direction (Figure 7.4). The measuring probe is fitted to the Y-axis arm and not the Z-axis arm as
in the other designs of CMM. The main advantage of this type of CMM is that the work volume
is large and free from obstruction. This type of machine can be used for large work piece such as
a car body.