林四林三测树学研究小组的同学,在原来研究的基础上,吸取了技术革新中一些同学提出的角规测树器上的优点,初步设计出“角规综合测树器”。它的构造简单,制作容易,使用方便,可测许多调查因子。现简介如下: 一、构造:在一根五十五厘米长的木尺上,附有一个带有一厘米宽缺口的、活动的水平角 Based on the original research, students from Lin Silin Sanjue Tree Research Group learned the merits of the angle measurement tree put forward by some of the students in technological innovation, and initially designed a “angle gauge integrated tree measuring device.” Its structure is simple, easy to make, easy to use, can measure many survey factors. Now briefings are as follows: First, the structure: On a 55 cm long wooden ruler, with a one-centimeter wide gap, the activity of the horizontal angle