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.
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.
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.
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
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.
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.
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.
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
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
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 bytrainees.
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.
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.
well-known Wild T2 UniversalTheodolite
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.
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.
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
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 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
autocollimationeyepiece unit (24 x magnification), interchangeable with
the normal telescope eyepiece.
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
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.
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.
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 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.
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.
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.
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.
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.
smaller version, the Wild ZBL, Roof and Ground Plummet, is similar in
design but has a shorter range and an accuracy of 1/10’000.
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
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.
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
2 m Subtense bar
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 1/10’000).
Objective Pentaprism, used mainly in mines for
vertical transfer of bearings to another horizontal level (Accuracy 1/70’000).
Wild Roelofs Solar Prism, giving a rapid sun azimuth
by direct sighting to the sun's center with four overlapping images (Publication
For Attachment to the Telescope Eyepiece:
GOA Autocollimation Eyepiece,
which allowsan 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.
Attachment to other parts of the Theodolite:
allowing an ordinary theodolite to be used as a spirit level.
Roof Plummet for plumbing beneath a roof mark or for the upward transfer of a plumb
(not with the all-steel T2), for the initial orientation of the horizontal
circle to Magnetic North.
(not with the all-steel T2), which gives the magnetic azimuth of a line of
(T2 only), for time and latitude determination.
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.