04 Jul 05
comparison & reviews of various GPS receivers, hardware, and software for field & office
by wyclif
20 years ago
03 Jul 05
“Double-graduated, 0-360° (Azimuth) and 0-90-0° (Quadrant) to 1°. Declination adjustment 45° East or West, 5´ vernier. Thumb screw needle lock.”
by wyclif
20 years ago