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