| 摘要 |
<p>A conventional magnetic compass can be used at night by installing a lamp on the lower part thereof, but is inconvenient in that it cannot regulate light from the lamp. In addition, the conventional magnetic is stick-shaped such that a weight balance thereof cannot be kept even by a small change in length. The conventional view glass is not a detachable type but a fixated type, leading to problems of difficulty in replacing and washing. To solve the above problems, a structure for a magnetic compass prepared by the present invention fixates the view glass to an upper cover using a view glass base and a view glass washer to easily separate and wash; uses a screw turning type structure using a view glass cover after the view glass is inserted; and includes a main body ring with a direction indicating a groove. In addition, the structure for a magnetic compass uses a circular magnetic where the same key groove is formed on the front surface and the back surface thereof because the conventional stick-shaped magnet is difficult to keep its balance, and has a weight with a C-shaped protruding unit on the upper part on the left and right sides in a circular shape in order to keep its balance. Finally, the structure for a magnetic compass can regulate light from a lamp by including a light penetration regulating unit.</p> |
