putter module when the user is satisfied that their stroke is smooth they will address the ball 73 again a user will check their posture by observing the green light led 8 on top of the putter module fig1 a 1 b 1 c and check the squareness of the face of the putter to the target by observing the amber light 14 on the target module fig2 next a user will stroke the putt towards the target at the moment of impact the amber light 14 on the target will go out if the putter was square to the target at impact a green light led 15 will appear on the target module fig2 if the putter face was not square to the target no light will appear after a two 2 second delay the target module fig2 will again be ready to recognize an alignment signal from the putter module fig1 a 1 b 1 c the putter module fig1 a 1 b 1 c preferably consists of a mounting bracket 1 which attaches the putter module to the shaft 71 of the putter 70 fig 7 clamp 2 holds the mounting bracket 1 to the putter 70 the pivot 3 which allows the putter module to position itself perpendicular to the ground regardless of the lie angle of the putter the aperture control 4 varies the width of the beam projected by the putter module fig1 a thru the lens 6 a user may use the aperture control 4 to adjust the amount of light emitted through the aperture 31 fig5 the aperture.