Groove Width and Separation

In order to carry out the “Ink and Scratch” method of measuring grooves, the following equipment is required:

  1. A thick black marker pen

  2. A carbite wedge ‘Marking Tool’ with Allen key (see Figure 2 below)

  3. A magnifier

  4. A steel ruler

  5. An alcohol wipe (to clean the club face)

This equipment may be available from The R&A or USGA at a reasonable cost.