Q:

How do I use a prismatic compass?

A:

Quick Answer

Using a prismatic compass first entails selecting the bearing and opening its lid, then folding it flat. Next, undo the curled knob, and move the bearing to the top. This is followed by tightening the knurled knob and lining up the two illuminated sticks. Finally, move the compass, and point it forward, ensuring that the two illuminated sticks do not separate.

  Know More

Full Answer

The prismatic compass was invented by Charles Schmalcalder and patented in 1812. The graduations on the compass are located on a light aluminum ring fastened to a needle such that the zero point on the graduation scale coincides with the south point of the needle. When the compass is in use, the graduations remain unmoved by the needle while the index turns with the sitting vanes.

The prismatic attachment consists of a 45-degree reflecting prism with a slightly convex eye and reading faces that magnify the image of the graduations for easy reading. This image is seen through a small circular aperture in the prism mounting; immediately above this aperture is a small V cut on top of the mounting, over which the vertical wire in the front vane may be viewed. When the vertical wire, the V cut and the station whose bearing is required are viewed in one line, the bearing can then directly read off the graduated arc at the point immediately underneath the vertical wire.

Learn more about Outdoor Adventure
Sources:

Related Questions

  • Q:

    How did the Iroquois people use the bow and arrow?

    A:

    The Iroquois people relied on the bow and arrow as both a weapon in times of war and as a means of providing food through hunting. As with nearly every Native American tribe, the bow and arrow were a critical part of both their livelihood and their culture.

    Full Answer >
    Filed Under:
  • Q:

    How do you use iron sights?

    A:

    Iron sights are the raised metal markers on top of a gun or crossbow that assist the user in aiming. Many new models of weapons have traded out iron sights for optical sights, such as telescopic scopes or laser markers. However, learning to aim using iron sights is a useful skill because it allows shooters to use a wider variety of weapons.

    Full Answer >
    Filed Under:
  • Q:

    Are Coleman ProCat heaters suitable for use in tents?

    A:

    Coleman ProCat heaters are designed for indoor use, specifically areas with proper ventilation, according to the Coleman product page. Other guides, such as Amazon customer reviews, have confirmed that the product works well in tents, reporting multiple successes with the Coleman ProCat heaters while camping, as of February 2015.

    Full Answer >
    Filed Under:
  • Q:

    How do hunters use animal track identification?

    A:

    Hunters use animal track identification to identify specific animals and their age, size, sex, weight and movement patterns. This helps them track and find the animals they hunt. Hunters can also use other signs such as hair, chews, food scraps, scratches, scat and rub to identify and track animals.

    Full Answer >
    Filed Under:

Explore