Your scale is ready to be pasted or transferred to the alidadeand each 6.
The alidade is a triangular ruler with one or more working scales on it beside other measurements.
These distances are already on the alidade and if you get a slope of 2° with the slope board and have the distance from your station on the map to the point of aim either by pacing, intersection or resection, apply the M.
Always carry several large-headed pins using one at your present station and resting the side of the alidade against it, swinging the other end for sighting.
The second lesson takes up the preparation of the stride scale on the alidade and the different kinds of maps, made in military sketching.
Field artillery required a precision instrument known as the miniature telescopic alidade of the Gale type.
A surveyor in India once made an alidade out of a piece of straightedge and two sights made of native coins hammered out by a native blacksmith.
A very simplealidade may be made by mounting two needles on a ruler.
He then places his alidade (ruler) so that it points at one of the known points, keeping the edge of the alidade touching the corresponding point on the sketch.
Nothing is so discouraging to the sketcher as to look for his pencil, eraser, knife or even alidade and find that he has left it several hundred yards back where he sat down last to sketch in details.
One of the telescopes is then placed over its alidade and moves with it; and the apparatus thus comprehends only a system of synchronous movements.
All this required the establishment of an accurate baseline and a number of control points by means of alidade and stadia-rod measurements.
By itself this was a simple process, but to record accurately what was found by this method and relate the features to each other required the use mainly of an alidade and a stadia rod.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "alidade" in a variety of sentences. We hope that you will now be able to make sentences using this word.
