7) are used to mark areas and to set out straight lines on the field. 6 Using a carpenter level 1.5 Ranging Poles Only when the carpenter level is horizontal (or vertical) is the air bubble exactly between these two marks (see Fig. The remaining space is air, visible as a bubble (see Fig. 5).Įach tube is sealed and partially filled with a liquid (water, oil or paraffin).
Within a carpenter level there are one or more curved glass tubes, called level tubes (see Fig.
#Plumb bob description free#
When the plumb bob is hanging free and not moving, the cord is vertical.Ī carpenter level is used to check if objects are horizontal or vertical. A plumb bob consists of a piece of metal (called a bob) pointing downwards, which is attached to a cord (see Fig. The rod is usually marked in the same way as a measuring tape, indicating centimetres, decimetres and metres.Ī plumb bob is used to check if objects are vertical. 3) is a straight lath with a length varying from 2 m to 5 m. 2 A measuring tape 1.2 Measuring RodĪ measuring rod (see Fig. Centimetres, decimetres and metres are usually indicated on the tape.įig. They are available in lengths of 20, 30 and 50 m. 2) are made of steel, coated linen, or synthetic material. Usually, a chain has a total length of 20 metres, including one handle at each end. Sometimes a special joint or a tally marker is attached every 5 metres. 1) is made up of connected steel segments, or links, which each measure 20 cm. Remember the plumb bob may be a useful guide if you’re not sure on a subtle slope but it’s not a given, and it also won’t help you determine if the putt is up or downhill.Chains or tapes are used to measure distances on the field.Ī chain (see Fig. If it appears to the left of the cup, the slope should take the ball from left to right. If the shaft appears to the right of the cup, the slope you are on should take the ball from right to left. If the shaft also covers the hole, the putt should be straight – the ground you are standing on should be level.
Hold the putter up, as described above between thumb and forefinger, towards the end of the grip if you can, covering the ball with the shaft. Stand about 10 feet or so behind the ball (maybe further back for longer putts) so you are looking directly through the ball to the hole in a straight line. You need to gain a good understanding of how the plumb bob method works before you put it into practice on the course, so you should spend some time on the putting green learning the process. This is very important as it’s how you must hold your putter each time in order to have a true vertical line when plumb bobbing – It won’t work otherwise.
Look where the putter head is positioned and remember that. Twist the putter round between thumb and forefinger to find the point where shaft and the chosen vertical are level. Find a known vertical, like the edge of a building, and hold the putter up so you can compare the vertical with the shaft lean. It likely won’t do that automatically as the shaft will generally not go into the very centre of the head meaning there will be some tilting.
In order to plumb bob effectively, you have to check the shaft of your putter hangs absolutely vertically when you hold it lightly between thumb and forefinger on the grip.