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WILD THEODOLITES AND ACCESSORIES FOR EVERY SURVEY TASK

(Source: Wild Heerbrugg Ltd. Heerbrugg Switzerland printed in 1965)

Containers    T0    T1A    T16    T2    T3     T4     RDH     RDS     RK1     TM10 / TM0     GAK1     DI50     ZNL     B3    Accessories      Tripods     Technical Data of Wild Theodolites

Wild Theodolites    TOP

The Wild production line provides a theodolite for all possible survey requirements and also offers a large variety of accessories, attachments and independent auxiliary equipment designed as additional means for the best possible use to be obtained from each instrument. Wild theodolites are distinguished by their solid, robust and stable construction, the ease with which they are handled and the speed with which sighting and circle reading can be made without the observer having to change his position. All telescopes have internal focusing and coated lenses, which provide bright, sharp images and all can be transmitted so that observations can be made on both faces. The magnifying power of each type of theodolite has been matched to the instrument's intended use. All theodolites have circles with graduations of either 360 or 400g, the customer specifying which model he requires when placing his order. The self reducing tacheometers (the RDS and RDH) have special devices for optical distance measurement but it is also possible to use the well- defined stadia lines on other Wild theodolites for tacheometric distance measurement. A wide range of accessories and instrumental attachments provides additional possibilities and accuracies for all survey tasks, when used in conjunction with the appropriate Wild theodolite.

 

Containers     TOP

All Wild theodolites are fully protected against the weather, and against damage when being transported, by means of strong metal carrying bases and hoods. For the T0 the base of the container is actually the base of the instrument itself.

 

T0     TOP

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.

 

T1A     TOP

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.

 

T16     TOP

The Wild T16 Direct Reading Theodolite has been designed as a tacheometric theodolite suitable for all low-order triangulations, tacheometrie detail and traverse surveys, mine surveys, property surveys, building site measurements, marking out, etc.

The easily read scales of the horizontal and vertical circles allow work to be carried out quickly, with estimation to one tenth of a graduation interval (one minute of arc) accomplished without difficulty. All clamps and tangent screws are placed logically so that they can be manipulated safely and comfortably. The combination of the simple circle scale reading and the operation of the instrument itself makes the T16 a most useful instrument for use by trainees.

There are several types of T16 each containing specially modified features. The T16-E has an upright telescope image, thereby providing additional speed for observing, especially when reading a vertical staff and laying-out works. The T16-ED has the extra facility of a horizontal circle with double numbering (360 circle only), allowing angles to read or set out either to the left ("North to West") or, in the normal fashion, to the right ("North to East"). The 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.

 

T2     TOP

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).

 

T3     TOP

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.

 

T4     TOP

The Wild T4 Universal Instrument is 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.

 

RDH     TOP

The Wild RDH Double Image Tacheometer is 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.

 

RDS     TOP

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.

 

RK1     TOP

The Wild RKI Self-Reducing Alidade is a robust, compact and easily-handled instrument which combines a telescopic alidade, a self-reducing Tacheometer and a convenient plotting device, with a large selection of interchangeable scales, for the immediate and neat plotting of detail by bearing arid distance. Similar in principle to the RDS Self- Reducing Tacheometer, it has a 25x magnification, internally-focusing telescope, with a routable eyepiece inclined at 45 to the optical axis, allowing the observer to work comfortably and without bodily strain. It is ideal for all practical plane-table work and, with its ancillary equipment, is unsurpassed as a means of teaching new personnel the basic elements of survey techniques.

 

TM10 / TM0    TOP

The Wild TM10 Tacheometric Rangefinder is used for direct optical distance measurement without a staff. It is well suited for reconnaissance work, measurement to inaccessible points and, when mounted on a tribrach and tripod, for normal low-order tacheometrie tasks with horizontal and vertical angles read to one tenth of a degree. The TM0 Small Rangefinder is a much smaller, hand held, instrument which is extremely popular with hunters.

 

GAK1     TOP

The Wild GAKI Gyro Attachment can be mounted on any suitable theodolite in order to give an orientation to True North with a standard deviation (m.s.e.) of 30" (1c or 0.2 mils) in about 20 minutes of working time. Such an orientation can be made under any conditions (even at night or when visibility is bad) and is not affected by local magnetic anomalies. For civilian and military users alike this new instrument is most valuable whenever azimuths are required, particularly in areas where trigonometrical control points are scarce or where military requirements demand a rapid independent orientation. The Wild T16 Direct Reading Theodolite is recommended as being the most suitable instrument for use with the GAK1, but the T1A and T2 can also be used. For further details of the GAK1 and the modifications required to the theodolite with which it is to be used our leaflet G1 404e should be studied.

 

DI50     TOP

The Wild DI50 Distomat is an electronic distance measuring instrument easily handled by all personnel, even those without technical knowledge of electronics. With a measuring range between 200 yards and about 35 miles (200 m to 50 km) it produces geodetic accuracy and gives a direct 7 figure displayed read-out. With suitable topographic and atmospheric condition even longer distances can be measured. Fitting into a Wild T2 tribrach, without optical plummet, the Distomat has all the advantages of forced centering and can be rotated about its tilting and standing axes in the same way as a theodolite telescope. Particularly attractive is the ability to set up the transmitter- antenna unit in its tribrach on a tripod or observing pillar and, by means of an extra long cable, to operate the instrument from the shelter of a vehicle. Further details are contained in our leaflet G1 307e.

 

ZNL     TOP

The Wild ZNL Zenith and Nadir Plummet is used for vertical plumbing through great distances and is invaluable to the builder, the engineer and the surveyor when working through heights which are too large for the normal theodolite plummet. Being detachable from the tribrach the ZNL (which has a plumbing accuracy of 1/30 000) can be centered over or under the required point and then replaced by the theodolite with guaranteed forced-centering. For some tasks, particularly those connected with large constructions, the ZNL can be used as an independent instrument. For the surveyor it is particularly useful when working on towers. Further details are given in our leaflet G1 117e.

A smaller version, the Wild ZBL, Roof and Ground Plummet, is similar in design but has a shorter range and an accuracy of 1/10000.

 

B3    TOP

The Wild B3 Tripod Compass determines the magnetic azimuth with an accuracy of about a tenth of a degree, circle eccentricity errors being eliminated by simultaneous viewing of the diametrically opposite parts of the compass circle. It is quick and easy to use and is recommended for setting out or determining magnetic bearings and for the orientation of installations such as wind vanes, antennae, compass roses etc.

 

Other Accessories     TOP

Wild Heerbrugg Ltd. manufactures many other accessories and attachment each designed to provide additional accuracy or an extra function for the basic instrument. The main items which can be used with the T1A, T16 and T2 theodolites are described briefly below - in some cases the same accessory fits each type of theodolite and in others there are slightly different models. A Wild dealer should be consulted and full details of the theodolite supplied before ordering a specific accessory.

 

For fitting into the tribrach ( with forced-centering):

Traverse targets (for the 3-tripod method), with or without the large target faces which slip over the screws of the main target.

2 m Subtense bar

For Attachment to the Telescope Objective:

DM1 Distance Measuring Wedge, which is used with a special horizontal staff and provides optical distance measurement up to about 500 ft (Accuracy at 300 ft. is 1/10000).

Objective Pentaprism, used mainly in mines for vertical transfer of bearings to another horizontal level (Accuracy 1/70000).

Wild Roelofs Solar Prism, giving a rapid sun azimuth by direct sighting to the sun's center with four overlapping images (Publication G1 403e).

 

For Attachment to the Telescope Eyepiece:

GOA Autocollimation Eyepiece, which allows  an ordinary theodolite to be used as an autocollimation instrument.

Diagonal Eyepiece, for sightings up to the zenith (also attached to the reading tubes).

Eyepiece Prisms, for steep sightings to within 25 of the zenith

Sunglasses, for sighting bright targets.

 

For Attachment to other parts of the Theodolite:

Telescope Level, allowing an ordinary theodolite to be used as a spirit level.

Telescope Roof Plummet for plumbing beneath a roof mark or for the upward transfer of a plumb point.

Tubular Compass (not with the all-steel T2), for the initial orientation of the horizontal circle to Magnetic North.

Circular Compass (not with the all-steel T2), which gives the magnetic azimuth of a line of sight.

Striding Level (T2 only), for time and latitude determination.

 

Wild Tripods    TOP  

All tripods have a standard fixing screw and a similarly shaped head, enabling any Wild level or theodolite. (and also the full range of accessories designed to be mounted on a tripod, as opposed to those for attachment to an instrument) to set up on any Wild tripod. Although each instrument has a particular tripod recommended for its use, it is possible, if circumstances demand, to make use of any Wild tripod that happens to be available. It is, of course, not advisable to use a large instrument on a tripod with a head that is much too small but, in an emergency, it could be done. All tripods have a pouch containing accessories and in most eases they are available with either rigid or telescopic legs (types a and b, respectively). With the exception of the metallic 16bL, they are made from carefully selected and well seasoned wood.  

Tripods recommended for various instruments    TOP  

Tripods

Levels

Theodolites, etc.

2a / 2b

NK01
N10
NK10

T0

16a / 16b
16bL (metal)

N2
NK2
(not the 16bL)

T1A
T16
TM10 (Rangefinder)

21a / 21b

NA2
NAK2

T2
RDS
RDH

11a

NA2
NAK2
N3

 

4a

 

T3

Technical Data of Wild Theodolites     TOP

 

 

T0

T1A

T16

T2

T3

RDS

RDH

Telescope Magnification

 

20

28

28

28

24,30,40

24

25

Diameter of field of view at 1000 meters

in meters

36

29

29

29

28

21

31

Shortest focusing distance

in meters

1.65

1.40

1.40

1.40

4.20

3.30

5.0

Multiplication constant

 

50/100

100

100

100

-

100

100

Additive constant

in cm

-10

0

0

0

-

0

0

Sensitivity of plate level per 2 mm

 

8

30

30

20

6.5

30

30

Direct reading

360
400 g

1
1c

20
1c

1
1c

1
2cc

0.2
1cc

1
1c

1
1c

Reading by estimation

360
400 g

30
50cc

5
10cc

6
10cc

0.5
1cc

0.1
0.5cc

6
10cc

6
10cc

Weight of Instrument

kg

2.8

4.8

4.5

5.6

11

5.7

7.1

Weight of Container

kg

0.7

1.7

1.7

2.2

4.1

2.2

7.0

Wild Heerbrugg Ltd.
Brochure No.:

G1
Th

202


154


124


143

219


110


104

 

 

        
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