Description
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Tribrach
Description
Tribrach with Circular Bubble without Optical Plummet.
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Cross Staff
Description
The Cross-Staff was used at sea from the beginning of the 16th century until the first half of the 18th century. It was used to measure the sun's altitude, especially at the meridian passage. With the knowledge of the sun's declination, the mariner could then obtain his latitude. The staff is original, with the inscription. The cross pieces are replicas. Different cross pieces were used depending on the altitude. A different scale is on each side of the staff.
Wooden Levelling Staff Telescopic type
Description
We bring forth an impeccable array of Wooden Leveling Staff to eminent customers. Products that we come up are ideally used to cater to the various needs and preferences of customers of various construction industry along with others. Therefore, this range is quality tested as per industry laid parameterst.
Clinometer Compass
Description
Clinometer Handle Compass is a reproduction of an antique Clinometer compass. The Handle Compass gets its name from its "handle" shaped sight, which actually serves two purposes With the compass level, an object can be viewed through the peep sights to determine its magnetic heading. The second and most interesting purpose is when tilting the compass on its side and viewing an object through the sights, its angle of elevation or declination can be found. A weighted pendulous arm beneath the compass needle can be read from one of three scales : Angle in degrees beneath the zenith (from straight up), angle in degrees of elevation or declination, and in inches per yard of slope. The compass has a needle lift mechanism to protect the compass jewel and the pendulous arm when being transported.
Box Sextant With Leather
Description
Cylindrical brass sextant in leather case. The sextand has pull out eyepieces, silvered scale and vernier magnifier on a hinged arm. The brass cover screws onto the base as a handle. The leather case is embossed with a flower on both sides. The case has an attached cover which fastens with a strap. The inside of the case is lined with purple velvet like material. Maker's mark on sextand, embossed stamp on case.
Abney Level
Description
The Hand Level is a small, economical level for use with preliminary surveys to determine traveller way or cable way steel work elevations and other feasibility type site reconnaissance work. The Abney Level is very similar to a clinometer in that it is used to measure the value of a slope by means of arc measure and grade percentage.Specification of Abney Level
• Used to determine slope angle, tree heights etc • Graduated 0-+/-90 degrees, 0-+/-100% on a stationary arc • Vernier reads to 10 • Scale pointer incorporates friction thumb lock • Includes carry case
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