Wild T1a Theodolite Manual

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Wild T1 Theodolite Manual Wild T1 Theodolite Manual Wild T1 Theodolite Manual T1 Micrometer Theodolite (model 70): 1973 - 1996 The Wild T1 is a Double Centre Theodolite with two independend cylindrical axes and they where produced between 1933 and 1996 in mainly four versions as shown abouve. Page 4/23 Acces PDF Wild T1 Theodolite Manual. The T1A would be followed by the T1A-E - 'E' for the 'Erect' field of view - in 1959. It would become the first Wild theodolite - and perhaps the first theodolite at all - to feature an automatic compensator for the vertical circle. In contrast to the other Wild theodolites produced so far, the Wild T1 was a true repetition theodolite like the.

Diese Seite gibt ihnen einen Überblick über all die Theodolite produziert von Wild Heerbrugg über all die Jahre.
Dieser Link führt Sie zu den
Technischen Daten der optischen Theodolite
Verwenden Sie diesen Link zu Wild Theodolite und Zubehör
This page will give you a overview over all the theodolites produced from Wild Heerbrugg over all the years.
Use this link to see the
Technical data of the WILD optical theodolites
Use this link to see the page with the WILD THEODOLITES AND ACCESSORIES FOR EVERY SURVEY TASK with Technical data of the WILD theodolite from 1965
Use this link to read a article about the changes from the first T2 to the Leica TCA2003 from Hugh BaertleinInside the Leica TCA2003
Note: not all data have been recorded, so some of the years are only estimated.
This list is definitively not complete, but I will do my best to hold it updated.

Typ / Model in production
(internal designation) from till
Wild T0 Compass Thoeodolite
T0 1932 - 1972
T0 (var) 1973 - 1978
T0 (neu) 1979 - 1990
The Wild T0 Compass Theodolite is a compact lightweight instrument, which can be used either for observing and setting-out magnetic bearings or as a normal theodolite for measuring or turning-off angles. It is particularly useful for rapid traversing, based on magnetic bearings, especially in areas where visibility is limited and the traverse legs likely to be short. The T0 can also be used for photogrammetric ground control surveys, low-order detailing, on building sites or as a recon- naissance instrument. The compass theodolite has a spring lever which to be moved to lower the compass circle onto its pivot. As this lever returns to its original position when released, thus raising the circle, the pivot can be damaged only as a result of particularly careless mishandling. Horizontal (i.e. Compass) Circle readings are of unusually high .accuracy for an instrument of this type and size, because of the coincidence setting of the diametrically-opposite parts of the circle. Horizontal and vertical circle readings are made to the nearest minute. The telescope has a magnification of 20x.
Accessories which can be attached to the TO include a telescope level, the Wild Objective Pentaprism, the Wild - Roelofs Solar Prism and an eyepiece sunglass for sighting bright objects.
Wild T1 Double Centre Theodolite
T1 1933 - 1938
NT1 1938 - 1956
T1AE 1959 - 1969
T101A 1965 - 1965
T101AE 1965 - 1966
T1 (70) / T1 (var) 1973 - 1996
The Wild T1A Double Center Theodolite is used for low-order triangulation, cadastral work, tunnel traverses, general traversing, tacheometry, property surveys, mine surveys, building site lay-outs etc. - in fact for most survey and engineering tasks where first or second order accuracies are not essential.
After the usual initial leveling-up, using the footscrews and plate level, the T1A is ready for vertical angles to be measured, there being no index level to center. The simple automatic vertical index, which replaces the usual level, thus makes vertical circle reading an easy matter and, as there are no mechanical parts, the liquid compensator has nothing to wear out-and nothing to maintain.
Each circle is read with the aid of an optical micrometer whose drum is cc).graduated to 20” (or 1c), with estimation made easily to 5” (or 10cc). Having two independent cylindrical vertical axes and two horizontal clamps (one each for the lower and upper plate and shaped differently to avoid confusion) the T1A allows the repetition method to be used for observing.
The T1A-E is identical to the T1A, except that its telescope provides an upright image - a feature often appreciated by users unaccustomed to working with an image that is reversed both laterally and vertically.
As the T1A (and T1A-E) can be removed from the tribrach without disturbing the centering, the famous Wild traversing equipment can be used with this theodolite, together with the full range of accessories, which is tabulated later.
Wild T16 Tacheometer Thoeodolite
T16The T160 is a normal TI6 theodolite without the vertical circle unit. If the user is certain that his survey tasks will never require the measurement of vertical angles this model will be of economic advantage to him.
The detachable tribrach ensures that the T16 can be used with all Wild traversing equipment and, of course, the normal accessories and attachments all provide additional uses and accuracies for the instrument.
Wild T2 Universal Thoeodolite
T2 1926 - 1936
NT2 1936 - 1955
T21 1956 - 1968
T21E 1958 - 1970
T21L 1960 - 1960
T210 1960 - 1960
T211 1966 - 1966
T211E 1966 - 1966
T21 (dig) 1968 - 1972
T2 mod 1973 - 1996
The well-known Wild T2 Universal Theodolite is ideally suited for almost every type of survey task. In addition to its high accuracy, with direct reading, to single seconds, it is simple to handle, has a well-illuminated optical and reading system and can be used with a large variety of accessories and attachments.
The optics are sufficiently good to allow observing to normal targets up to 12 miles (20 km) away and, under favorable conditions, for pointing to the Pole Star to be made in the late afternoon. Circle readings, are made through one eyepiece, an inverter knob bringing the required circle image into the field of view. Coincidence setting provides a direct meaning of the two diametrically-opposite circle positions. The single second graduations and the general quality of the T2, with its all steel construction offering addition-al stability, make it a real 'Universal' theodolite widely used for triangulations up to 3rd arid even 2nd order limits, precise traversing, subtense measurements, astronomical observations, tacheometry, engineering work of all types, cadastral lay-outs, staking-out straights and curves, mining surveys and special industrial purposes, for which the special inter- changeable GOA autocollimation eyepiece is most useful.
The T2-E is identical to the T2, apart from the upright telescope image and the T210 is another Variation of the instrument which, in this ease, has no vertical circle, being used for tasks where the T2's accuracy is required but without vertical angles.
All models of the T2 are made so that the instrument can be removed from its tribrach and replaced by a target or subtense bar, without disturbing the centering. lf required, a special tribrach without built-in optical plummet, is available and another special tribrach fitted with a ball-centering device enables the T2 to be set up on an observation pillar in an embedded centering socket (a pillar bolt).
Wild T3 Precision Thoeodolite
T3 1927 - 1934
T3R 1953 - 1968
NT3 1935 - 1971
NT3A 1972 - 1984
The Wild T3 Precision Theodolite is simple to use and, in fact, is similar to the T2 both in looks and operation. It is, however, larger and has even more accurate circles. Originally designed for 1st and 2nd order triangulations it is now becoming equally popular for the high precision measurements required &n such fields as dam Deformation surveys, industrial installations and machine tooling. For these last-named functions the T3A auto-collimation model is normally used, although it is possible to fit a standard T3 with a special autocollimation eyepiece unit (24 x magnification), interchangeable with the normal telescope eyepiece.
The T3's steel construction gives it exceptional stability under all conditions, which provides an additional reason for its general acceptance as the perfect instrument for precision measurements. Although not equipped with a detachable tribrach the T3 has various possibilities for forced-centering, such as a ball centering device for pillar set-ups and a removable bayonet base allowing the theodolite to be used in conjunction with a special T3 - T2 combination locking bayonet base, which takes the T3, the T2 and all items of T2 traverse equipment. In addition it has its own range of accessories such as eyepiece prisms for steep sights, an astrolabe prism and other items intended for use on dam deformation work.
Wild T4 Universal Instrument
T4 1941 - 1966
T4A 1968 - 1975
T4 (mod) 1977 - 1981
The Wild T4 Universal Instrumentis the largest of the Wild range of theodolites and is used for geodetic triangulation, astronomical observations and-geographical position determinations. Its broken telescope (with 65x magnification) allows comfortable sighting to the zenith. Circle readings are made with an optical micrometer and by coincidence setting of diametrically opposite graduations. The horizontal circle is read directly to 0.1” and the vertical circle is .0.2”. Accessories of equally high precision are also available for use with the T4, such as a chronograph, a chronometer and a time signal receiver.
The Wild RDH Double Image Tacheometeris used with a special horizontal staff and provides very accurate tacheometric measurements. Based on the popular TI6 theodolite, with the same scale reading system, the RDH has a double image telescope which enables a direct horizontal distance reading and a direct difference in elevation to be obtained with a single pointing to the staff.
Wild RDS Self-Reducing Tacheometer
RDS1 1950 - 1975
RDS 1974 - 1984
RDS-D 1979 - 1989
The Wild RDS Self-Reducing Tacheometer gives a direct horizontal distance reading and a height difference involving no tables and only a simple mental multiplication. Based on the TI6 theodolite, the RDS is used with a vertical staff and the normal stadia lines are replaced by very flat curves. When the special RDS staff is used, its zero mark is set to the same height as the tilting axis of the instrument, thus making calculations even easier. The RDS can be used as an ordinary theodolite, with the normal TI6 reading accuracies.
Wild Electronical Theodolites
TC1 1977 - 1979
T2 EL Var 1981 - 1983
T2000 1983 - 1987
T2000S 1984 - 1991
TC2000 1983 - 1987
T1000 1988 - 1992
T1600 1986 - 1992
TC1000 (Secel) 1988 - 1988
TC1000 (Wild EDM) 1988 - 1992
TC1600 (Secel) 1985 - 1988
TC1600 (Wild EDM) 1988 - 1992
T2002 1988 - 1996
TC2002 1990 - 1997
T3000 1989 - 1997
T1010 1992 - 1995
T1610 1991 - 1995
TC1010 1992 - 1995
TC1610 1991 - 1995
Wild T1a Theodolite Manual Software

Theodolite vs Transit
How to Use a Theodolite
How a Theodolite Works

Other

Types of Theodolites

There are two different kinds of theodolites: digital and non digital. Non digital theodolites are rarely used anymore. Digital theodolites consist of a telescope that is mounted on a base, as well as an electronic readout screen that is used to display horizontal and vertical angles. Digital theodolites are convenient because the digital readouts take the place of traditional graduated circles and this creates more accurate readings.

Parts of a Theodolite

Like other leveling instruments, a theodolite consists of a telescope mounted on a base. The telescope has a sight on the top of it that is used to align the target. The instrument has a focusing knob that is used to make the object clear. The telescope contains an eyepiece that the user looks through to find the target being sighted. An objective lens is also located on the telescope, but is on the opposite end as the eyepiece. The objective lens is used to sight the object, and with the help of the mirrors inside the telescope, allows the object to be magnified. The theodolite's base is threaded for easy mounting on a tripod.

How Does a Theodolite Work?

A theodolite works by combining optical plummets (or plumb bobs), a spirit (bubble level), and graduated circles to find vertical and horizontal angles in surveying. An optical plummet ensures the theodolite is placed as close to exactly vertical above the survey point. The internal spirit level makes sure the device is level to to the horizon. The graduated circles, one vertical and one horizontal, allow the user to actually survey for angles.

How to Use a Theodolite

  1. Mark the point at which the theodolite will be set up with a surveyor’s nail or a stake. This point is the basis for measuring angles and distances.
  2. Set up the tripod. Make sure the height of the tripod allows the instrument (the theodolite) to be eye-level. The centered hole of the mounting plate should be over the nail or stake.
  3. Drive the tripod legs into the ground using the brackets on the sides of each leg.
  4. Mount the theodolite by placing it atop the tripod, and screw it in place with the mounting knob.
  5. Measure the height between the ground and the instrument. This will be used a reference to other stations.
  6. Level the theodolite by adjusting the tripod legs and using the bulls-eye level. You can make slight tunings with the leveling knobs to get it just right.
  7. Adjust the small sight (the vertical plummet) found on the bottom of the theodolite. The vertical plummet allows you to do ensure the instrument remains over the nail or stake. Adjust the plummet using the knobs on the bottom.
  8. Aim the crosshairs in the main scope at the point to be measured. Use the locking knobs on the side of the theodolite to keep it aimed on the point. Record the horizontal and vertical angles using the viewing scope found on the theodolite’s side.

Theodolite vs Transit Level

A theodolite is a precision instrument used for measuring angles both horizontally and vertically. Theodolites can rotate along their horizontal axis as well as their vertical axis. Theodolites have a lot in common with transits.

A transit is a surveying instrument that also takes accurate angular measurements. Along with the transit, theodolites have mounted telescopes that can be rotated in different directions. Both theodolites and transits can be used for similar projects, but there are slight differences between the two instruments. Transits use vernier scales and external graduated metal circles for angular readings. Theodolites use enclosed graduated circles and angular readings are taken using an internal magnifying optical system. Theodolites tend to have a more precise reading and provide greater accuracy in measuring angles than transits do.

Theodolites are mainly used for surveying, but they are also useful in these applications:

  • Navigating
  • Meteorology
  • Laying out building corners and lines
  • Measuring and laying out angles and straight lines
  • Aligning wood frame walls
  • Forming panels
  • Plumbing a column or building corner

Advantages of Using a Theodolite

Theodolites have many advantages when compared to other leveling instruments:

  • Greater accuracy.
  • Internal magnifying optical system.
  • Electronic readings.
  • Horizontal circles can be instantly zeroed or set to any other value.
  • Horizontal circle readings can be taken either to the left or right of zero.
  • Repeat readings are unnecessary.

Theodolites have an internal optical device that makes reading circles much more accurate than other instruments. Also, because the theodolite allows you to take fewer repeat readings, these measurements can be made much more quickly. Theodolites with optical instruments have advantages over other layout tools. They have more precise measurements, they are unaffected by wind or other weather factors, and they can be used on both flat ground and sloped ground.

Caring For a Digital Theodolite and Helpful Hints

Like other instruments, theodolites require proper care and maintenance to ensure the best results and reduce wear and tear on the instrument.

  • Do not submerge instrument in water or any other chemical.
  • Do not drop instrument.
  • Make sure theodolite is locked in its case while transporting.
  • When raining, use cover over instrument.
  • Do not look directly into the sunlight through the telescope on the instrument.
  • Using a wooden tripod can protect the instrument from vibrations better than an aluminum tripod would.
  • Using the sunshade attachment is important; any sudden temperature changes can cause incorrect readings.
  • Never hold the instrument by the telescope.
  • Always have a substantial level of battery power on your instrument.
  • Always clean the instrument after using.
    • Dust in the case or on the instrument can cause damage.
T1a
  • If the theodolite is damp or wet, allow it time to dry out before storing it in its case.
  • When storing, make sure that the telescope on the instrument is in the vertical position.
  • When the theodolite is being re-leveled, the position over the ground point must be checked and rechecked to ensure the same position.
  • When the theodolite is being repositioned over a ground point, the level must be checked and rechecked to ensure its accuracy.

If you’d like more how-to information, visit Johnson Level’s complete list of how-to guides for tools and levels.

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Wild T1a Theodolite Manual Download

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40-6932
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