Angle Differences with Ivory and Composition Balls

Meanwhile, I will do what I can to help those who play with composition balls.  

Fig. 1 is  drawn  for  this  purpose.   

It shows the usual halfball loser played from hand off the red on the centrespot.

To make the top pocket with a normal set of ivories, you should place your ball 71/2 inches from the centre spot of the " D " in the direction of the pocket you wish to score.

At least, this is the general way of teaching it, and as it will serve my present purpose, I do not propose to question it. Very well, if you place your ball 7 1/2 inches to the right of the centrespot of the " D," a true halfball will make the top pocket as shown in Fig. 1, if you are using ivory balls.

But with composition balls, I think you want to place your ball an inch and a half further to the right to make the long loser into the top pocket.

To show what this means even more clearly, Fig. 2 shows the difference in position, illustrated by balls drawn
standard size, on the baulk line.

Excerpt from "ALL ABOUT BILLIARDS"  How to Improve Your Game By Arthur F. Peall.

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