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WILD LEVELS FOR EVERY LEVELING TASK(Source: Wild
Heerbrugg Ltd. Heerbrugg Switzerland printed in 1965) Containers
N10
NA2
N3
Technical
Data of Wild Levels Staves Invar
Leveling Staves Wild
Tripods Each Wild level has been designed for a particular
field of application and with a definite type of user in mind. The range extends
from the simple dumpy level, used by the builder or farmer for construction or
drainage tasks, to the precision level for the civil engineer or geodetic
surveyor who requires the highest possible accuracy. All Wild levels have
powerful telescopes, commensurate with their required function, with coated
optics, internal focusing-and stadia lines for distance measurement. The initial
rapid pre-leveling is made with the aid of a circular bubble and three foot screws,
which are protected against dust and which can be adjusted to ensure a smooth
and adequate run. In the ease of the Wild NA2 Automatic Engineers' Level, the
circular bubble has merely to be centered carefully to make the line of sight
horizontal. All knobs are controlled, and all eyepieces are viewed, without the
observer having to change his position. The NK01 has a metal horizontal circle
as a standard feature. With the exception of the N3, all other levels can be
supplied either with or without a glass horizontal circle, depending upon the
customer’s requirements. When a glass circle is fitted to a level the code
name has a "K” added to it - e.g. NK10, NK2 and NAK2, respectively. In
all cases the glass circle of a "K” level is read through the eyepiece of
a scale microscope. The main numbered divisions are in degrees or grades and the
auxiliary scale is in 10 minute intervals, with accurate estimation possible to
1/10 of each such interval. Containers TOPThe smaller Instruments (NK01, N10 and NK10) have a
shock-proof plastic container which is exceptionally strong and long lasting,
although very light and easy td handle. All
other Wild levels are carried in metal containers, specially designed to give
the maximum protection in the simplest form. NK01 TOPThe
Wild NK01 Dumpy level is a most convenient level for the building site. The
telescope rotates under a friction-braked action, thus requiring no horizontal
clamp. Fine pointing is completed by means of a tangent screw. Readings on the
metal horizontal circle are made by eye against a fixed index mark, with
estimation possible to a tenth of a degree or grade, according to the circle
division. The circle itself can be turned by hand to set any desired initial
bearing. The circular and tubular level bubbles are seen, free from parallax, in
the hinged observation mirror which, when closed, protects the glass vials. N10
TOP
The Wild N10 Small Engineers' Level is an efficient
compact and lightweight instrument, giving highly accurate results under all
conditions. It is suitable for general leveling, project studies, route surveys,
irrigation works, civil and constructional engineering. When fitted with a glass
circle (NK10) it can be used in flat terrain for tacheometric work and for
measuring or setting-out horizontal angles. The line of sight is leveled with
the aid of a tilting screw and the well known Wild "split-bubble"
image system. It has an extremely short minimum focusing distance of 1 meter
(3.3 feet), which is most useful. lt is possible to supply this instrument with an
upright image telescope (models N10-E and NK10-E) - a feature often appreciated
by those who use their level only occasionally or who find it difficult to work
with an inverted image. The E-models have a minimum focusing distance of 1.35
meters (4-5 feet). N2
TOP
The Wild N2 Engineers’ Level is a strongly built,
accurate and reliable general purpose instrument, which is easy to operate. It
is unsurpassed foe use on civil and constructional engineering projects, bench
mark Establishment breaking down primary level networks, profiles,
cross-sections, road and railway surveys and for photogrammetric height control.
When fitted with a glass circle (NK2) it can be used in flat terrain for setting
out works and for measuring horizontal angles and distances. Fine pointing is
made with a horizontal clamp and a tangent screw and an accurate coincidence
setting of the tubular level split bubble image is made by means of a tilting
screw. The telescope and tubular level can rotate simultaneously about the
longitudinal axis, enabling the vertical collimation to be checked easily at one
instrumental set-up. NA2
TOP
The
Wild NA2 Automatic Engineers' Level is particularly useful when accurate
readings are required quickly. After the circular bubble has been centered
carefully, by means of the foot screws, the line of sight is made horizontal
automatically through the pendulum type compensator. As a result the NA2 has
neither a tubular level nor a tilting screw. Being insensitive to the sun no
umbrella is required and this also helps to speed up the leveling. A plane
parallel plate micrometer is now available as an optional accessory to the NA2
(and the NAK2, which is identical to the standard model, with the addition of a
glass horizontal circle) and this attachment enables an even higher accuracy to
be obtained. With it, direct readings to 0.001 ft. or 0.1 mm are made and
estimation to 0.0005 ft. or
0.01 mm is possible without difficulty. The micrometer eyepiece is placed most
conveniently just above the telescope eyepiece. The reticule differs from the
normal type, as one half of the horizontal line has been replaced by two
wedge-shaped lines, converging towards the center so that either the chess-board
type of staff or one with graduated lines may be used. The telescope gives a
bright, contrasting, upright image and the horizontal rotation is
friction-braked, with an endless tangent screw for fine pointing. N3 TOPThe
Wild N3 Precision Level is an outstanding instrument for all first order leveling
work. Designed originally for geodetic networks it has been adopted universally
as the ideal level for the precise measurement required in dam deformation
surveys, industrial installations, aircraft fuselage assemblies and vertical
displacement determinations. The plane parallel plate micrometer is mounted in
front of the objective lens as a built-in feature of the N3 and is available in
metric and non-metric models, giving reliable and simple estimation to 0.01 mm
and 0.0005 inch,
respectively. The reticule has part of its-horizontal line in the form of two
wedge-shaped lines, converging towards the center allowing the staff graduation
to be split or straddled, depending on the circumstances and on which part of
the cross-hair is used. Collimation errors are corrected by means of a rotation
of the objective lens cover glass which enables an exceptionally sensitive, but
simple, adjustment to be made. Interchangeable eyepieces provide the possibility
of observing with either an inverted or an upright image. Technical Data of Wild Levels (1965) TOP
Technical Data of Wild Levels (1981) TOP
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