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Wild T4 Instructions for Determination of Geographic Positions


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Detail
  Name: Wild T4 Universal Theodolite  
  Publisher: Wild Heerbrugg (by Dr.H Odermatt)  
  Classification: User manual  
  Subject: Wild T4 - Instructions for Determination of Geographic Positions  
  Edition: ---  
  Date: ---  
  Language: English  
  Pages: 114  
  Dimension (cm): A4  

Wild T4 Universal Theodolite:

Instructions for Determination of Geographic Positions
by Dr.H Odermatt

Including Provisioning List:
U.S. Army Corps of Engineers
Operational, Maintenance and Service Manual for Wild Universal T-4 Theodolite

Table of Contents

 

SECTION 1 TABULATED DATA

SECTION 2 TECHNICAL DATA

SECTION 3 DESCRIPTION

The vertical axis system

The horizontal axis system

The vertical circle

The suspension level

The Horrebow levels

The telescope

The collimation axis

The physical horizontal axis

Equator of the instrument

The collimation error.

The levels

The construction of the level

The sign of the inclination

The telescope eyepiece

Circle reading

Horizontal circle

Vertical circle

Horizontal circle drive

Horizontal azimuth selling circle

Vertical circle drive 18 3.12

Vertical selling circle 18 3.13

Electric lighting of the instrument

Day-time lighting

The chronometer

Correction rate of the chronometer

Epoch of, an observation

The chronograph

Radio receiver

Meterological instruments

 

SECTION 4 OPERATION

Choice of station

Selling up the pillar or tripod

Dimensions of the pillar 1

Selling up the tripod

Preparation for setting the instrument

Tent

Selling up the instrument

Unpacking

Cleaning the instrument and interior of tent

Suspension level

Preparing the Instrument for use

Levelling the instrument

Adjustment of the suspension level

Eccentric instrument stations

Angle measurements

Focussing the telescope

The measurement of horizontal angles

The effect of the constants 1

The method of observation

The instrumental constants

The measurement of vertical angles

Reading of the vertical circle level

Corrected readings

The computation of zenith distance

Zenith point and its correction

Determination of the zenith distance

The influence of the inclination of the vertical axis

Determination of the geographic coordinates

Determination of longitude

The determination of time

Taking the time of a star's transit

The self-recording micrometer

Description

The observation of a star's meridian transit

Width of the contact strips

Lost motion

Correction of the contact time

Determination of time by Meridian method

The stability of the azimuth

Readjustment of instrument

The coordinates of the station

The star program

Example of time determination

Star list

The selling of the ST chronometer

The procedure for the transit observation

The star's path through the field

The observation method

The field book

The Favag chronograph

Changing the recording tape rolls 1

Winding up the spring

Marking the tape

Reading the tape

The scale reading

Reading method

Reading the self-recording micrometer signals

Recording the results in Form

Accurate setting of telescope on meridian

Setting the vertical of instrument on meridian

Comparison of local 5T with Gr. ST

Determination of Latitude, Horrebow-Talcott

The Horrebow·Talcott Micrometer

The Horrebow-Talcol1 Levels

Star pairs program

Catalogue of stars

The effect of errors

The star's path

Refraction

Preparing the instrument

Directions' for observing

Belated observations

Determination of Latitude by Stemeck-Method

The star list

Preparation for the observation

The star's path in the field of view

Method of observing

Refraction

Belated observation

Re-Ievelling of the instrument

Example

Determination of the astronomic Azimuth

Method of azimuth observations

Computation of the azimuth of the mark

The program of observation

Time of transit of Polaris

The chronometer correction

Elimination of graduation errors

Preparation of the observations

The observation

The field book

 

SECTION 5 MAINTENANCE

Adjustments

Focusing of eyepiece

Focusing of objective lens

Centering of the reticle

Stops for 900 rotation

Adjustment of the contact drum

Widths of contact strips (w)

Lost motion (1m)

Angle value of the micrometer screw

Cleaning of the reticle plates

Level values

Suspension level

Vertical circle level

Horrebow-Talcott levels

Adjustment of the trunnion axis

Collimation error of the telescope

Determination of the collimation error

Correction of the collimation error

Determination of collimation error with a second theodolite

Checking the reading microscopes

Lubrication

Accessory case

Provisioning list


 

 

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Wild T4 Instructions for Determination of Geographic Positions was added to our catalog on Saturday 16 January, 2010.

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