Deck/Measuring tool/652621 PLANIMETER F/ENGINE INDICATOR

中文品名：发动机指示器平面测量仪

Used to determine the average effective pressure from the indicator diagram of the engine indicator easily and accurately.  Also capable of, similarly to ordinary planimeters, measuring the area of intricate plane figures.  Clip the figure to be measured on the plate to move the stylus along the closed figure.  The difference between readings on the graduated ring before and after the stylus trip will provide the movement area of the figure in cm2.  Range of the stylus:  within 65 x 130 mm, One graduation on the ring:  1 cm2, Accurate reading:  up to 0.1 cm2

用于从发动机指示器的示功图中方便、准确地确定平均有效压力。与普通平面仪类似，也能测量复杂平面图形的面积。在平板上夹住要测量的图形，以便沿着闭合的图形移动指示笔。触控笔行程前后刻度环上的读数之间的差值将提供图形的移动面积(以平方厘米为单位)。手写笔范围：65x130 mm以内，指环上一个刻度：1cm2，读数准确，最高可达0.1cm2