Understanding the Basics of a Lensatic Compass
A lensatic compass is a type of compass commonly used in the military for navigation and orienteering. It is also sometimes called a military compass or a marching compass. Unlike a traditional compass with a stationary needle, the lensatic compass has a floating dial that can be adjusted for better accuracy.
Parts of a Lensatic Compass
Before we dive deeper into how to use a lensatic compass, let’s first familiarize ourselves with its various parts. The lensatic compass usually consists of:
- A floating dial with degrees marked on it
- A sighting wire or notch
- A magnifying lens
- A base with a straight edge and a ruler
- A thumb loop or thumb ring for stability
How to Use a Lensatic Compass
Using a lensatic compass may seem daunting at first, but with some practice, it can become second nature. Here are the basic steps:
- Hold the compass level in your hand with the baseplate against your palm and your thumb through the loop/ring for stability.
- Point the compass away from you in the direction you want to go.
- Align the sighting wire/Notch with your target.
- Look through the magnifying lens and wait for the floating dial to settle.
- Read the degree markings on the dial and follow the direction indicated.
Tips for Using a Lensatic Compass
Like any tool, using a lensatic compass effectively takes some practice. Here are some tips to help you along the way:
- Draw a straight line on your map connecting your starting point and destination to determine your azimuth (direction).
- When sighting a target, make sure the sighting wire/notch is precisely aligned with your target.
- Hold the compass steady and level while taking readings to avoid errors.
- Be aware of declination – the difference between true North and magnetic North – and adjust your readings accordingly.
- Keep your lensatic compass in good condition by storing it in a protective case and cleaning it regularly.
A lensatic compass is a valuable tool for orienteering and navigating through the wilderness. With regular practice and proper maintenance, it can provide accurate readings that will help keep you on course. By understanding its basic parts and following a few simple steps, you can master the art of using a lensatic compass like a pro.
