Abstract: An aid for the game of golf for assisting a golfer determine the slope or break of a golf green. The aid is placed on the green and the slope is read in two directions by sighting a level on top of the aid. Contact is made with the green by using contacts with preferred shapes. In particular, one preferred shape is a substantial segment of a golf ball complete with dimples. Additionally, in order to increase accuracy of the aid, its weight and the location of the green contacts are arranged so that each contact weighs on the green with the weight of a golf ball. Three green contacts are deemed preferable. A preferred level is a large area circular bubble level.

Abstract: An aid for simultaneously indicating the degree of slope of lateral and longitudinal contours of a golf green relative to the straight line between ball and cup. The aid comprises a first leg extending along a straight line of ball travel and a second leg normal thereto. A pair of level gauges are positioned within a groove of each leg to indicate an uphill or downhill slope along the straight line of ball travel and/or a downhill or uphill slope lateral to the straight line of ball travel upon placement of the aid on the green. The grooves may be extended to allow for the releasable fit of additional or replacement level scopes therein in order to enhance the longitudinal and/or lateral slope measurements.