A training device assisting golfers in reading putting greens includes a housing having a central cavity shaped and dimensioned for receiving the golf ball therein. The housing includes a closed first end and an open second end. A force producing mechanism is positioned at the closed first end of the housing and extends toward the open second end within the housing. The force producing mechanism is positioned within the housing for selective actuation thereof so as to contact and push forward a golf ball positioned within the housing. Upon actuation, the force producing mechanism launches the golf ball smoothly onto the golf putting green surface at a pre-determined speed.