用正弦尺测量锥体的角度,要先知道锥体的标准锥角2α值。sin 2α从三角函数表上查得后,代入公式H=L sin 2α,求出正弦尺应垫的块规高度H(式中L是正弦尺两圆柱体中心距,如图所示)。接着用千分尺测量锥体上母线两端高度差,以便求出锥度的误差来。现在的问题是:一般锥体不给出 Measuring the angle of the cone with a sine foot, you must first know the standard taper cone 2α value. Sin 2α from the trigonometric function table, into the formula H = L sin 2α, find the sine rule should be pad height H (where L is the sine of the distance between two cylindrical centers, as shown). Then use a micrometer to measure the height difference between the two ends of the bus bar in order to find the taper error. The question now is: the general cone is not given