Greetings, in our California Custom Fitting Studio we have found it helpful to measure the length of the score lines of various irons to compare the size of the striking surface.One model may claim to be midsize while another may claim to be oversize.But just how big are they and in comparison to what? We have measured several popular clubs that have enjoyed tremendous acceptance among golfers to give you some basis for comparison to the models we are offering, you can also measure the score line length of your clubs to see how they compare.We do this in millimeters because it is more accurate for us, and if you don’t have one, you can buy a clear ruler at an office supply store that will give inches as well as mm and cm.Another specification or item of information you will find here is the face thickness.We have known for some time the primary determinant of spring effect in drivers is face thickness, but most don’t give much thought to it in irons. A thinner face in irons allows more discretionary weight to be placed around the perimeter of the club giving it more consistent distances on mis hit’s and it enhances the spring of the face. A thicker face means more mass concentrated in this area immediately behind the ball and will feel more solid and increase your ball speed assuming a center hit.

Ping® Eye 2 + score line length of 6 iron 50mm. Face Thickness variable 3.75mm.

Ping® I 10 score line length of 6 iron 53mm. Face thickness variable 2.75mm.

Callaway® Big Bertha 06 score line length of 6 iron 50mm. Face Thickness 3.2mm.

Callaway® Big Bertha Fusion score line length of 6 iron 53mm. Face Thickness 3.0mm.

Macgregor® VIP Tourney V-Foil score line length of 6 iron 53mm. Face Thickness variable 10.0mm.

Vector® 17-7 Stainless Nickel Cast score line length of 6 iron 55mm. Face Thickness variable 2.8mm.

Vector® 25c Forged score line length of 6 iron 54mm. Face Thickness variable 6.0mm.