How to Build a Golf Club Swing Scale

Written by mike frees
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How to Build a Golf Club Swing Scale
Properly weighted golf clubs can improve your game (driving range golfer image by Xavier MARCHANT from

The concept of golf club swing weight was developed by clubmaker Robert Adams in the 1920s. Swing weight is a measure of a club's moment of inertia around a pivot point 14 inches from the grip end of the club. It basically measures the "feel" of the club's weight during the swing, which is determined by how the weight is distributed among the club's head, shaft and grip. Adams defined a "Lorythmic" scale which uses the letters A through F, each subdivided into tenths. Most clubs fall into the C and D ranges. Swing weight can be measured with a specialised swing weight scale, but it can also be estimated using an ordinary postal or kitchen scale and a simple balance you can make at home.

Skill level:

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Things you need

  • Postal or kitchen scale
  • Yardstick
  • Small dowel or large nail, 3 to 4 inches long
  • 2 x 4 board

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  1. 1

    Drive the nail or drill and insert the dowel near one end of the board (or on an open area of a wall) so that it sticks out horizontally about 3 inches. The club shaft will be balanced on this dowel during measurement.

  2. 2

    Measure 14 inches horizontally (in either direction) from the centre of the dowel and mark that point. Now glue or nail the yardstick on the board so that it starts at that point and extends farther away from the dowel (the yardstick may extend beyond the end of the board.) The scale is now ready to use. If you have built it on a board, it is a good idea to clamp the board in a vice so that it is perfectly level, with the dowel or nail projecting out horizontally.

  3. 3

    Weigh the golf club on the postal scale and record its weight in ounces or grams.

  4. 4

    Place the club's shaft on the nail or dowel so that the grip end is extending toward the yardstick. Adjust the club so that it is perfectly balanced and horizontal. Read the measurement on the yardstick at the butt end of the grip and record this number.

  5. 5

    Multiply the two numbers obtained in steps 3 and 4. This will give you a measurement called "inch-ounces" or "inch-grams" depending on what units your scale used. Find the nearest number in the appropriate column below to find the approximate swing weight of your club.

    Swing Inch- Inch-

    Weight Ounces Grams

    C-0 196.00 5550

    C-1 197.75 5600

    C-2 199.50 5650

    C-3 201.25 5700

    C-4 203.00 5750

    C-5 204.75 5800

    C-6 206.50 5850

    C-7 208.25 5900

    C-8 210.00 5950

    C-9 211.75 6000

    D-0 213.50 6050

    D-1 215.25 6100

    D-2 217.00 6150

    D-3 218.75 6200

    D-4 220.50 6250

    D-5 222.25 6300

    D-6 224.00 6350

    D-7 225.75 6400

    D-8 227.50 6450

    D-9 229.25 6500

    E-0 231.00 6550

Tips and warnings

  • See Resources for a detailed description of swing weight and how it can be adjusted to suit your game.

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