Billiard goal angle protractor

Abstract

The horizontal plane of the billiard table and the pull-down vertical direction of the heavy object base of the semicircular angle measuring device form another horizontal plane, a downward fixed aiming point of about 30 degrees is arranged between the two horizontal planes, an aiming method of two horizontal planes and one base line is formed, and the angle between a billiard target ball and a white ball and the angle between the billiard target ball and a ball inlet are accurately measured through a visual method.

Description

[0001] The application discloses a billiard ball entry angle protractor, in particular to a billiard ball entry angle protractor which can visually measure the billiard ball entry angle. BACKGROUND

[0002] The existing billiard ball entry angle protractor lacks scientific aiming method and basically aims by feeling. In this case, the accuracy of the ball entry into the hole depends on the feeling and there is no strict target ball and accurate hitting point between the target ball and the ball entry hole. SUMMARY

[0003] The application provides a billiard ball entry angle protractor which is based on the principle that the weight falls at the bottom of the protractor and the fingers support the upper part of the protractor to form a straight, horizontal and vertical principle by gravity and the principle of the weight falling to form a horizontal state of the semicircular angle measuring device in the middle front section of the protractor.

[0004] In this state, two horizontal planes exist simultaneously, one is the horizontal plane of the billiard table and the other is the horizontal plane formed by the vertical pulling of the weight base of the semicircular angle measuring device. Between the two horizontal planes, two aiming points with an inclination of about 30 degrees are arranged, the front aiming point is located in the front section of the 30-degree aiming inclination point and a circular hole at the center of the semicircular angle measuring device, and the rear aiming point is in the shape of a T-shaped notch at the rear end of the 30-degree aiming inclination point, similar to the rear foresight of a gun, and forms a 30-degree downward straight aiming line with the full-circle foresight of the front aiming point.

[0005] When used, the billiard ball entry angle protractor is held by fingers, the target ball to be hit is sleeved into the circular hole at the center of the semicircular angle measuring device, the T-shaped notch foresight at the rear upper end of the 30-degree aiming inclination point is used to cover the lower half of the target ball, the direction is adjusted left and right, the straight line marked on the base with the weight is aligned to the center line of the white ball, and the angle line drawn on the semicircular angle measuring device is used to accurately measure the entry angle between the target ball, the ball entry hole and the white ball. BRIEF DESCRIPTION OF DRAWINGS

[0006] The application is further described below in combination with the drawings and examples.

[0007] Figure 1 FIG. 1 is a layout diagram of the billiard ball entry angle protractor.

[0008] Figure 2 FIG. 2 is a detailed diagram of the T-shaped foresight of the billiard ball entry angle protractor.

[0009] Figure 1 FIG. 3 is an embodiment of the billiard ball entry angle protractor.

[0010] In Figure 1 1.T type sight, 2. is a half round angle measuring device, 3. is the hand holding position of the billiard ball angle measuring device, 4. is the rod of the billiard ball angle measuring device, 5. is the weighted base, 6. is the straight line in the middle of the base aligning the white ball, 7. is the aiming hole. Specific embodiments

[0011] In Figure 1 the embodiment shown, 1.T type sight is located at the uppermost end of 4. the rod of the billiard ball angle measuring device, which forms a downward straight line of about 30 degrees with 7. the aiming hole at the center of the front section 2. the half round angle measuring device.

[0012] The level of 2. the half round angle measuring device is determined by 5. the weighted base and 3. the hand holding position of the billiard ball angle measuring device. When the billiard ball angle measuring device is lifted by the fingers, 5. the weighted base will fall under the force of gravity, thus pulling 2. the half round angle measuring device to a level state.

[0013] The billiard table itself is a level, and 2. the half round angle measuring device forms another level after falling under the force of gravity. The two levels form a fixed downward aiming point of about 30 degrees with 1.T type sight and 7. the aiming hole. When in use, the user only needs to move forward and backward, align the target ball with the aiming angle, and then align 6. the straight line in the middle of the base with the center line of the white ball, so as to accurately measure the angle between the target ball and the hole on the 2. half round angle measuring device.

Claims

1. A billiards angle gauge for measuring the angle of a cue ball, characterized by: The hand-held position and the weighted base of the billiard goal angle gauge can be placed, the upper is light and the lower is heavy, under the action of gravity, the horizontal and vertical lines formed will install the semicircle protractor in the front section of the billiard goal angle gauge, and pull down to a horizontal state.

2. A billiards corner pocket angle gauge according to claim 1, wherein: The aiming hole at the center of the semicircle protractor and the T-shaped foresight at the uppermost end form a fixed oblique downward aiming line of about 30 degrees.

3. A billiards corner pocket angle gauge according to claim 1 wherein the force is gravity. The horizontal state of the pulled-down semicircle protractor and the horizontal of the billiard table itself, and the oblique downward aiming line of the straight line between the aiming hole and the T-shaped foresight are locked into one, a double-horizontal baseline aiming mode.

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