GAS SPRING WAS USED AND A LINEAR GUIDE BEARING AT THE BACK FOR GOOD ALIGNMENT.
ROLLER BEARING WAS ALSO USED FOR ALIGNMENT OF THE ROD.
I USED THE SAME MECHANISM WHICH IS BEVEL GEAR FOR THE UPWARD AND DOWNWARD
MOVEMENT.
I PUT SOME ROLLER FOR EASY MOVING IN ONE PLACE. ROLLER IS OPTIONAL.
THE GAS SPRING CAN BE ADJUSTED BY CHANGING THE POSITION OF HOLE IN THE BASE FOOT.
FOR LOCKING MECHANISM THERE IS A SCREW KNOB THAT WILL PREVENT HANDLE FOR ROTATING. SCREW KNOB ALSO CAN BE CHANGE IN AN INDEX SCREW TYPE.