Abstract: A device (1, 1?, 1?) for covering a golf hole (2) is provided, that has a planar top side (3) and is or can be arranged inside said golf hole (2) and is designed to cover or close the golf hole (2) reversibly. This device (1, 1?, 1?) is designed and intended such that the planar top side (3) of the device (1, 1?, 1?) is aligned approximately flush with a top edge (4) of the golf hole (2).

Abstract: A positioning device for a golfer when putting has orientation means for orienting the positioning device relative to a target, placement means for predetermining a relative position of the positioning device and a golf ball, and adjustable positioning means for predetermining a standing position of the golfer relative to the positioning device, i.e. relative to the golf ball. The position of the golfer's feet with regard to the golf ball can be reproducibly predetermined or adapted, respectively, using the positioning device.

Abstract: A putter fitting device (1) having a base plate (2) with a fixation device (5) for a putter head (14), which provides a first fixation state for a first, torque-proof fixation of the putter head (14) and a second fixation state for a second, rotational fixation of the putter head (14) in reference to the base plate (2), with the putter head (14) in the second fixation state being rotational in a plate plane of the base plate (2). An adjustable positioning body (11) is connected to the base plate to predetermine a stance of a person in reference to the base plate (2), and alignment markings (9, 27, 29) are provided for a targeted alignment of the putter head (14) in the second fixation state and for controlling a selected alignment of the putter head (14).

Abstract: A putter fitting device (1) having a base plate (2) with a fixation device (5) for a putter head (14), which provides a first fixation state for a first, torque-proof fixation of the putter head (14) and a second fixation state for a second, rotational fixation of the putter head (14) in reference to the base plate (2), with the putter head (14) in the second fixation state being rotational in a plate plane of the base plate (2). An adjustable positioning body (11) is connected to the base plate to predetermine a stance of a person in reference to the base plate (2), and alignment markings (9, 27, 29) are provided for a targeted alignment of the putter head (14) in the second fixation state and for controlling a selected alignment of the putter head (14).

Abstract: A device to practice playing golf having at least one first, flat section for placing the device onto the ground, particularly in the area of the green of a golf course, and a second section, at least arranged partially off-set in reference to the first section so that after the placement of the device with its first section a golf ball can be located underneath the second section. The device is provided with an arrangement in the second section, by which a marking applied on the golf ball is discernible in order to check the relative alignment of the device and the golf ball. This allows a golf ball to be aligned to a target and/or a target alignment of the golf ball that is set can be checked.