| 摘要 |
<p>PURPOSE: A protective device for geodetic surveying equipment is provided to lock or unlock a leveling rod while safely protecting the leveling rod, thereby enabling to keep the leveling rod while preventing the inflow of foreign materials. CONSTITUTION: A protective device for geodetic surveying equipment includes a leveling rod (11), a case (12), a rotary shaft (14), an oval hole (21), a support (13), first rotary grooves (19), and a second rotary groove (18). The leveling rod is spread and retracted at three stages. The case receives the leveling rod. The rotary shaft is formed on an end of the case and rotates the case. The oval hole is formed around the rotary shaft. The support includes a trench (17) for receiving the case. The first rotary grooves are formed on both inner walls of the trench and support the rotary shaft when the rotary shaft is rotated.</p> |
