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You measure them, using a laser sight, if required.
what is the line of sight equation
To help the user avoid this problem, the scale is sometimes printed above a narrow strip of mirror, and the user positions his eye so that the pointer obscures its own reflection. This guarantees that the user's line of sight is perpendicular to the mirror and therefore to the scale. Parallax is thus avoided.
No. The word sight is a noun or a verb (to look or aim). It is often confused with the homophone words cite (quote) and site (location).
eyesightforesighthindsight
couple of reasons.... if you are drawing and dimensioning with a Why_would_it_be_innapropriate_to_dimension_to_a_feature_on_a_surface_that_is_not_perpendicular_to_the_line_of_sightprogram the dimension will be inaccurate... If it is mechanical drawing then the fabricator would not have enough information to accurately measure the component. ie a circle turned a few degrees away from perp. would appear to be an ellipse. and may actually dimension that way
couple of reasons.... if you are drawing and dimensioning with a computer program the dimension will be inaccurate... If it is mechanical drawing then the fabricator would not have enough information to accurately measure the component. ie a circle turned a few degrees away from perp. would appear to be an ellipse. and may actually dimension that way
The Twilight Zone
no
You measure them, using a laser sight, if required.
You unlock this door with the key of imagination. Beyond it is another dimension: a dimension of sound, a dimension of sight, a dimension of mind. You're moving into a land of both shadow and substance, of things and ideas; you've just crossed over into the Twilight Zone . ~ Rod Serling
If it is on the surface, smell and sight will tell you.
Twilight Zone introductions narrated by Rod Serling Season 1 "There is a fifth dimension beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call the Twilight Zone." Season 1 alternate "You are about to enter another dimension, a dimension not only of sight and sound but of mind. A journey into a wondrous land of imagination. Next stop, the Twillight Zone!" Season 2 "You're traveling through another dimension, a dimension not only of sight and sound but of mind. A journey into a wondrous land whose boundaries are that of imagination. That's the signpost up ahead - your next stop, the Twilight Zone!" Season 3 "You are traveling through another dimension, a dimension not only of sight and sound but of mind. A journey into a wondrous land of imagination. Next stop, the Twilight Zone!" Season 4 & 5 "You unlock this door with the key of imagination. Beyond it is another dimension - a dimension of sound, a dimension of sight, a dimension of mind. You're moving into a land of both shadow and substance, of things and ideas. You've just crossed over into the Twilight Zone."
prevent trapping of air bubbles line of sight must be perpendicular to get the correct reading and avoid errors
The horizon is point at which the earth curves away from our line of sight at the earth's surface.
The place or space beneath the surface of the ground; subterranean space., Being below the surface of the ground; as, an underground story or apartment., Done or occurring out of sight; secret., Beneath the surface of the earth.
in dumpy level the line of sight is perpendicular to vertical axis.But in tilting level the line of sight need not be perpendicular to vertical axis .the instrument is roughly leveled in a tripod stand with respect to bubble tube & thus making the instrument approximately vertical...then it is tilted with a finely pitched tilting screw which tilts the telescope wrt to vertical...it has advantage that due to tilting levelling can be done quickly and accurately!!