- Empty cart.
- Continue Shopping
TS-630 Marine Three-Arm Protractor
Structure:
Three-arm protractor consists of cupreous graduated circle(180 degrees on the left and right), 3 surveyor’s poles(fixed pole in the center and movable pole on the left and right), micro drum wheel and indicators, needle in the center and worm gear screw rod, etc.
| Model | TS-630 |
| Diameter of the graduated circle | 126.8mm |
| Arm length | 340mm |
| Length of connecting arm | 290mm |
| Total length of the pointing arm | 630mm |
| Minimal reading number | 1min |
| Other | differential drum type |
The description/sizes may be different with goods, please check with us when order.
Usage:
1.Marine three-arm protractor cooperates with sextant to measure the marine position
2.Threepoint-two-angle method to measure the marine position on the chart
WhatsApp us
Reviews
There are no reviews yet.