Position adjuster for a device

A position adjuster for adjusting a projection device, the position adjuster comprising:

• an adjustment dial including a gripable outer circumference and a threaded inner circumference;
• an adjustment rod including a threaded outer surface;
• and
• a foot including a substantially rounded contact region coupled to the adjustment rod, wherein the contact region engages a reference surface;
• wherein the threaded inner circumference of the adjustment dial engages the threaded surface of the adjustment rod during fine adjustment and disengages from the threaded surface of the adjustment rod to enable coarse adjustment.

A position adjuster for adjusting a device at a select angle from a reference surface, comprising:

• an adjustment rod;
• and
• an adjustment dial having at least a fine-adjustment position and a coarse-adjustment position;
• the adjustment dial operatively engaging the adjustment rod for fine-adjustment when in the fine-adjustment position and the adjustment dial disengaging the adjustment rod for coarse-adjustment when in the coarse-adjustment position;
• wherein the coarse adjustment mechanism includes a disengagement structure, wherein the disengagement structure automatically collapses upon excessive force;
• wherein the adjustment dial includes a gripable outer circumference and a threaded inner circumference, the adjustment rod includes a threaded outer surface, and the threaded inner circumference of the adjustment dial engages the threaded surface of the adjustment rod during fine adjustment and disengages from the threaded surface of the adjustment rod to enable coarse adjustment.