The compass cover
A lensatic compass has a sighting lens and a floating dial for precise navigation, while a mirror compass has a mirror for sighting and a fixed dial for general direction. Lensatic compasses are more accurate but require more skill to use, while mirror compasses are easier to read but less precise.
There are three main types of compasses used for navigation and outdoor activities: magnetic compasses, digital compasses, and lensatic compasses. Magnetic compasses use a magnetized needle to point towards the Earth's magnetic north. Digital compasses use sensors to determine direction and often have additional features like GPS. Lensatic compasses are more advanced and have a sighting lens for more accurate readings.
BFRO.net contains a database of sightings
sex·tantˈsekstənt/nounan instrument with a graduated arc of 60° and a sighting mechanism, used for measuring the angular distances between objects and especially for taking altitudes in navigation.
The last sighting was in 2004.
the first vampire sighting was in 0001bc.
Yes, neon sighting is lustrous
Sighting means to manage to see or observe
Second Sighting was created on 1988-05-24.
They usually see UFO's at a UFO sighting
That was prior to written history so there is no record of the first sighting.