ocular lens
Today's microscopes use convex lenses.
A concave lens is thinner at the centre. People who are short sighted often use a concave lens to help them see better.
Most will insert the compass deep into their butts because they are idiots
As a compass.
Adventurers and explorers use a compass
Compasses are used in a variety of modern applications, including navigation for hikers, backpackers, and wilderness enthusiasts, as well as in orienteering sports. They are also used in military and search and rescue operations, and as a backup navigation tool in case of technology failures. Additionally, compass apps are available on smartphones for everyday use.
how they use the compass it so they won't get lost
A magnetic compass does. Though there are other types of compass that do not
Compass
You use a compass rose, in case you get lost. A compass rose, gives you all the cardinal directions.
You would use a convex lens.
we use the pencil, protractor and a compass. we use the pencil, protractor and a compass.
Yes it is possible to use compass needle at the poles
The prismatic compass is a type of compass use for survering a land.
ocular lens
NATO uses a compass