六分仪
航海六分仪是一种反射式光学测角仪器。
1. 测量天体的高度来求取船位。
2. 测量地面上三个已知位置目标间的两个水平夹角, 利用三杆分度仪在海图上求取船位。
3. 测定已知高度目标的垂直夹角来求取距离。
The marine sextant is a kind of reflection typeangular measuring optical instrument.
1) Measuring the altitude of celestial bodies to de- termine the position of the ship at sea.
2) Measuring the two horizontal angles between three known position land objects the ship location on chart by the help of a station pointer.
3)Measuring the vertical angle of a known altrtude object to obtain its distance.
主要技术参数 MAIN TECHNICAL DATA
型 号 Type | GLH130-40 |
测量范围 Measuring range | -5°~130° |
精度(峰峰值) Accuracy(peak to peak value) | 40″ |
最小读数 Readability | 12″ |
使用温度范围 Temperature range | -30°~+50℃ |
望远镜 Telescope | 3.5×40 |
照明电压 Lamp voltage | 3V |
仪器重量 Net weight | 1.2Kg |