Circular Level Vial

Base

Collimator

Collimator

Communication Port

Display and Keyboard

Eyepiece Focus

Eyepiece Focus

Handle

Handle

Horizontal Axis

Horizontal Circle Lock

Horizontal Circle Tangent Screw

Horizontal Motion

Keyboard

Leveling Head

Leveling Screws

Objective Focus

Objective Lens

Optical Plummet Eyepiece

Optical Plummet Lens Focus

Tribrach Leveling Screws

Tribrach Lock

Tribrach

Tripod

Vertical Axis

Vertical Circle Lock

Vertical Circle

Vertical Tangent Screw

1 rod=1 pole=1 perch=_____ft

16.5

1 mile=_____ft

5280

1 acre=_____(with chains)

10ch^2(10(66x66))

1 acre=____m^2

4046.9

1 acre=____ft^2

43,560

1 mile=_____chains

80

1 chain=____ft

66

When computing coordinates, the sine of a line's azimuth multiplied by the line's length produces the line's _____.

Departure

When computing coordinates, the cosine of a line's azimuth multiplied by the line's length produces the line's _____.

Latitude

Azimuths are always measured in a _____ direction.

Clockwise

A bearing can not be greater than ____ degrees.

90

There are ____ minutes in a degree.

60

The close agreement or consistency of a group of measurements is _____.

Precision

The most often or commonly occurring measurement in a group is called the ____.

Mode

How many square chains are in a 1 acre tract?

10

1 Square Mile =______acres

640

1 acre tract=______ square perches

160

A measured value that is as close to the true or theoretical value as possible is _____.

Accurate

Setting the instrument over the wrong station is a ______.

Mistake

A series of consecutive line's directly measured by angle and distance on the ground is a ______.

Traverse

The distance formula

√((N₁-N₂)²+(E₁-E₂)²)

Standard Deviation Formula

σ=√(Σv²)/(N-1)

First Quadrant Bearing to Azimuth Conversion:

Drop lettersEx. N 27° E27°

First Quadrant Azimuth to Bearing Conversion:

Add letters N EEx. 45°N 45° E

Second Quadrant Bearing to Azimuth Conversion:

Drop LettersSubtract from 360° (360°-bearing)Ex. N 35° W(360°-35°=325°) 325°

Second Quadrant Azimuth to Bearing Conversion:

Subtract from 360° (360°-azimuth)Add letters N WEx. 295°(360°-295°=65°) N 65° W

Third Quadrant Bearing to Azimuth Conversion:

Drop lettersAdd to 180° (180°+Bearing)Ex. S 65° W(180°+65°=245°) 245°

Third Quadrant Azimuth to Bearing Conversion:

Subtract 180° (azimuth-180°)Add the letters S WEx. 260°(260°-180°=80°) S 80° W

Fourth Quadrant Bearing to Azimuth Conversion:

Drop LettersSubtract from 180° (180°-bearing)Ex. S 25° E(180°-25°=155°) 155°

Fourth Quadrant Azimuth to Bearing Conversion:

Subtract from 180° (180°-azimuth)Add letters S EEx. 110°(180°-110°=70°) S 70° E

The abbreviation MSL stands for _________.

Mean Sea Level

A monument (e.g. brass disk) of known elevation is a _______.

Bench Mark

The process of determining elevations or differences in elevations is called ________.

Leveling

The wooden, calibrated (numbered) rod that is sighted is called a _________ rod.

Philadelphia

When turning tribrach screws, the rule is that the level bubble follows the instrument operator's ___________.

Left thumb

The abbreviation EDM stands for ___________.

Electronic Distance Measurement

A normal section of land in a PLSS state contains ________.

640 acres

Surveys that determine the location and elevation of natural and artificial features are _______ surveys.

Topographic

The compass' tendency to point to the magnetic pole in Canada rather than the true north pole produces a horizontal angle between the two meridians which is called _______.

Magnetic Declination

On a USGS topographic map, astronomic and magnetic north are shown in relation to the map orientation which is ________ north.

Grid

The abbreviation LEC stands for _______.

Linear Error of Closure

To find the azimuth of a line you use this formula:

tan^{-1}θ=departure/latitude

The large books that were shown in class are called:

Tax Maps and/or Land Books/Indexes

A permanent object that marks a property corner, e.g. an iron pipe or a large tree is called:

Monument

A right given by grant, agreement, or deed which allows a person to use the land or another for a specific purpose such as a road or utility line, is an

Easement

Boundary Monuments are of two main types. They are

Natural and Artificial

The Doctrine of Adverse Possession is based on

The Statute of Limitations

A marked tree or object near a corner monument is called a

Reference

Term given to the manner in which rights to land are held in any given country

Land Tenure System

Three categories of Land Surveys:

1. Original Surveys

2. Retracement Surveys

3. Subdivision Surveys

A characteristic of a good Point of Beginning

Its identity is clear and certain in the field.

The name of the first century mathematician in Alexandria, Egypt, whose formula we use to find the area of a triangle is _______.

Herron

Herron's Formula

s=(a+b+c)/2Area=√s(s-a)(s-b)(s-c)