Abstract: A support stand includes a locking unit for adjusting its height and a support unit for angular adjustment in a horizontal plane. The locking unit includes a center bar fixed to the lower end of an outer pipe, a mesh sleeve unit having a mesh sleeve, upper and lower sliding bushes respectively connected to the mesh sleeve, a coil spring arranged between the upper and lower sliding bushes, a spacer sleeve arranged above the upper sliding bush and loosely fitted on the center bar and in the inner pipe whose lower end is fixed to the lower sliding bush, and an actuator sleeve provided around the inner pipe and connected to the inner pipe in a manner movable with the aid of a cross pin passing through axially elongated apertures formed in the inner pipe.