The court shall be a rectangle and laid out with lines 40mm wide. The lines shall be easily distinguishable and preferably be colored white or yellow. All lines form part of the area which they define. The posts shall be 1.55 meters in height from the surface of the court and shall remain vertical when the net is strained as provided in Law 1.10. The posts shall be placed on the doubles side lines， irrespective of whether singles or doubles is being played. The net shall be made of fine cord of dark color and even thickness with a mesh of not less than l5mm and not more than 20mm.The net shall be 760mm in depth and at least 6.1 meters wide.

　　The top of the net shall be edged with a 75mm white cloth tape doubled over a cord or cable running through the tape. This tape must rest upon the cord or cable. The cord or cable shall be stretched firmly， flush with the top of the posts. The top of the net from the surface of the court shall be 1.524 meters at the center of the court and 1.55 meters over the side lines for doubles. There shall be no gaps between the ends of the net and the posts. If necessary， the full depth of the net should be tied at the ends.

　　2.SHUTTLE

　　The shuttle may be made from natural and/or synthetic materials. From whatever material the shuttle is made， the flight characteristics generally should be similar to those produced by a natural feathered shuttle with a cork base covered by a thin layer of leather. The shuttle shall have 16 feathers fixed in the base.

　　The feathers shall be measured from the tip to the top of the base and each shuttle shall be of the same length. This length can be between 62mm and 70mm.The tips of the feathers shall lie on a circle with a diameter from 58mm to 68mm.The feathers shall be fastened firmly with thread or other suitable material. The base shall be 25mm to 28mm in diameter and rounded on the bottom. The shuttle shall weigh from 4.74 to 5.50 grams.

　　The skirt， or simulation of feathers in synthetic materials， replaces natural feathers. The base is described in Law 2.6.Measurements and weight shall be as in Laws 2.3， 2.4 and 2.7. However， because of the difference in the specific gravity and other properties of synthetic materials in comparison with feathers， a variation of up to 10 per cent is acceptable.

　　Subject to there being no variation in the design， speed and flight of the shuttle， modifications in the above specifications may be made with the approval of the Member Association concerned： OR In places where atmospheric conditions due to either altitude or climate make the standard shuttle unsuitable. If special circumstances exist which make it otherwise necessary in the interests of the game.

　　3. TESTING A SHUTTLE FOR SPEED

　　To test a shuttle， use a full underhand stroke which makes contact with the shuttle over the back boundary line. The shuttle shall be hit at an upward angle and in a direction parallel to the side lines.A shuttle of correct speed will land not less than 530mm and not more than 990mm short of the other back boundary line.

　　4.RACKET

　　The main racket parts are called the handle， the stringed area， the head， the shaft， the throat and the frame. The handle is the part of the racket intended to be gripped by the player. The stringed area is the part of the racket with which it is intended the player hits the shuttle. The head bounds the stringed area. The throat （if present） connects the shaft to the head. The frame is the name given to the head， throat， shaft and handle taken together.

　　The frame of the racket shall not exceed 680mm in overall length and 230mm in overall width. The stringed area shall be flat and consist of a pattern of crossed strings either alternately interlaced or bonded where they cross. The stringing pattern shall be generally uniform and， in particular， not less dense in the cen

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