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A circle divided horizontally is the symbol for the Focal Plane of a camera, the actual point of focus. It is sometimes stamped on the back of a camera body in the appropriate space. The ( Focal plane indicator) is not something akin to a compass or speedometer- with movable parts. it is a reference mark. a Circle with a central Vertical Line- often used on Maps, generally means Latitude or observed latitude. Do not confuse with degrees. That"s my take.
What else can I help you with?
What is the color of the circle line in London underground?
On the London Underground map, the Circle Line is coloured yellow.
What does the London underground's logo mean?
It looks like a straight central line going over a circle line, a small part of the map of the Underground.
What does a star or a circle mean on a map?
A star is a capital and a circle is a city
What does a dot in a circle mean on a map?
capital city
What does a circle star on a map mean?
Compass Rose
What does a circle star mean on a map?
Compass Rose
What does a dot in a circle mean on map?
capital city
What does the circle in a star mean on a map?
it means a capital
Is the line or the circle mean on?
The line, or I (Initialise) means on
What does '' a tangent to a circle '' mean?
It is a straight line that touches the circle.
A line segment that is only half through the circle?
If you mean a line that gous from the center of a circle to the edge of the circle, that is a radius.
What does a star inside a circle mean on a map?
Compass Rose
