| 出生地 |
Tianjin China (Mainland) |
| 牌子的名字 |
SETL |
| 模式的数量 |
DS-2 |
Bitmap Model ParameterDS-2-32Standard Deviation for 1km Double-run levelling1.5mmTelescope imageErectMagnification32XClear Objective Aperture40mmField of View1°20Shortest Focusing Distance0.65Stadia Multiplying Constant100Stadia Additive Constant0Sensitivity of Circular Level8/2mmGraduationinterval of Circle1°or1gonCompensator typeX-shaped wire suspension air-dampingCompensator working Range±15Setting Accuracy±0.3Connecting size to tripodM16 or 5/8