Table of Contents
- 1 What is a horizontal angle measured clockwise from the north baseline?
- 2 What is the angle measure of a horizontal line?
- 3 What is a horizontal angle in surveying?
- 4 What is the first step to measure the horizontal angle?
- 5 How do you measure horizontal measurement?
- 6 What angle is horizontal?
- 7 Which is the base line for angular measure?
- 8 Which is the unit of measure for direction?
- 9 Which is the correct direction for a military protractor?
What is a horizontal angle measured clockwise from the north baseline?
An azimuth is a horizontal angle measured clockwise by degrees or mils between a reference direction and a line to an observed or designated point. There are three base directions or azimuths: true, grid, and magnetic.
What is the angle measure of a horizontal line?
Typically, horizontal angles are measured in degrees, from 0 to 360. An angle of 90 degrees would be a right angle, which is formed by two perpendicular lines.
What is a horizontal angle in surveying?
In topography, the angle made by two ground lines is measured horizontally , and is called a horizontal angle. You may replace these ground lines by two lines of sight AB and AC.
Is an angle measured clockwise or counterclockwise from a north or south base line?
Angles in the northeast and southwest quadrants are measured in a clockwise direction and angles in the southeast and northwest quadrants are measured in a counter-clockwise direction from either the north or south meridian, using whichever will yield and angular measurement of 90� or less.
What are the horizontal measurements?
1. The horizontal measurement is taken from the left of the figure to the right. 2. The vertical measurement is taken from the top of the body figure to its base.
What is the first step to measure the horizontal angle?
1. To measure the horizontal angle which of the following is the first step? Explanation: To measure the horizontal angle, firstly we set up instrument and level it. Secondly, releases all clamps.
How do you measure horizontal measurement?
In plane surveying, the distance between two points means the horizontal distance. If the points are at different elevations, then the distance is the horizontal length between plumb lines at the points.
What angle is horizontal?
The ball is kicked horizontally, so no velocity is given in the vertical direction to the motion of the ball in the vertical direction. The ball is subjected to two motion both independent of each other. One motion is in the vertical direction.
How do you find the horizontal distance?
Horizontal distance can be expressed as x = V * t . Vertical distance from the ground is described by the formula y = – g * t² / 2 , where g is the gravity acceleration and h is an elevation.
What are the methods of measuring horizontal angle?
Choosing the most suitable method
| Section1 | Method | Equipment2 |
|---|---|---|
| 3.3* | Compass or protractor | Simple compass, protractor, drawing sheet |
| 3.3** | Plane-table | Plane-table drawing paper |
| 3.4* | Right-angle method | Measuring line |
| 3.5*** | Theodolite or transit | Transit level with graduated horizontal circle |
Which is the base line for angular measure?
To express direction as a unit of angular measure, there must be a starting point or zero measure and a point of reference These two points designate the base or reference line. There are three base lines— true north, magnetic north, and grid north. The most commonly used are magnetic and grid. a. True North.
Which is the unit of measure for direction?
Directions are expressed as units of angular measure. a. Degree. The most common unit of measure is the degree (°) with its subdivisions of minutes (‘) and seconds (“). 1 degree = 60 minutes. 1 minute = 60 seconds. b. Mil. Another unit of measure, the mil (abbreviated ), is used mainly in artillery, tank, and mortar gunnery.
Which is the correct direction for a military protractor?
Military protractor. b. When using the protractor, the base line is always oriented parallel to a north-south grid line. The 0- or 360-degree mark is always toward the top or north on the map and the 90° mark is to the right.
How is the direction to the North Magnetic Pole indicated?
The direction to the north magnetic pole, as indicated by the north-seeking needle of a magnetic instrument. The magnetic north is usually symbolized by a line ending with half of an arrowhead ( Figure 6-1 ). Magnetic readings are obtained with magnetic instruments, such as lensatic and M2 compasses. c. Grid North.