Support system

A support device comprising:

• a base element;
• a first arm connected to the base element, the first arm including a housing having a first end receiving a rotatable joint and an opposite second end having an adjustment opening, the housing defining an indicator window positioned between the first and second ends;
• a second arm supporting the first arm, the first arm being pivotable about a first axis with respect to the second arm, the first axis is positioned between the indicator window and the adjustment opening;
• a balancing mechanism disposed in the housing and providing a force on the first arm about the first axis;
• an adjustment mechanism to adjust the magnitude of the force provided by the balancing mechanism, wherein the adjustment mechanism is accessible to a user through the adjustment opening;
• and
• an indicator arrangement disposed in the housing, wherein the indicator arrangement is visible in the indicator window and provides a visual indication of the force provided by the balancing mechanism,
• wherein the balancing mechanism includes,
• a slider moveable along a longitudinal axis of the housing,
• a first link pivotally connected to a proximal portion of the slider and pivotally connected to the base element, a first proximal pivot coupling the first link to the base element and a first distal pivot coupling the first link to the slider, and
• a second link pivotally connected to a distal portion of the slider and the rotatable joint, a second distal pivot coupling a distal portion of the slider to the rotatable joint and a second proximal pivot coupling the second link to the slider, wherein the slider holds the distance between the first distal pivot and the second proximal pivot constant.