This section is from the book "Hints To Golfers", by O. K. Niblick. Also available from Amazon: Hints To Golfers.
(1) Grasp the shaft the same as when playing off the right leg, the left foot pointing to the left of the ball, with the heel opposite the ball, the right foot well back and turned out, the knees a little bent and the feet far enough apart to give a firm stance.

(2) As the swing is made without any movement of the body, the right shoulder should be well down, the left elbow pointing towards the hole and the right elbow bent enough to allow the arm to swing freely in front of the body.
In other respects the stroke is the same as when playing off the right leg.
Putting with the Ball Opposite the Centre of the Body or the Pendulum Stroke.
(1) Stand squarely facing the ball, the feet spread fairly well apart, the ball opposite the centre of the body and the knees only a little bent as the stance should be as firm as possible.

(2) Grasp the club well down the shaft with a light but firm grip holding the shaft either the same as when playing off the right leg or with the shaft held in the fingers of the right hand, the left hand guiding it.

(3) Have both elbows pointing well out so that no movement of the body will affect the swing.
(4) As the essence of the stroke is a pendulum movement, the body should not move with either the backward or forward swing, the shoulders acting as a fulcrum for the long putts and the wrists for the short ones.
(5) With the follow through the club head should go forward only as far as the pendulum movement of the swing naturally carries it.
In taking the stance, first rest the putter back of the ball in its proper position and then square the body to the line of flight.
One objection to the pendulum stroke is that the slightest preponderance of strength in either hand deflects the putter from the straight line. For the same reason, if either arm is brought more into the stroke than the other there will be a similar turning of the club.
 
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