Final answer:
In the lab, we have vertical and horizontal manual milling machines with different axes of motion and spindle alignment.
Step-by-step explanation:
There are two types of manual milling machines in the lab: vertical milling machines and horizontal milling machines.
Vertical milling machines have three axes of motion: X-axis, Y-axis, and Z-axis. The spindle axis is aligned with the Z-axis.
Horizontal milling machines have two axes of motion: X-axis and Y-axis. The spindle axis is aligned with the X-axis.