• With steel pole Size 1.5mm dia with tilting type
• With steel pole Size 1.5mm dia without tilting type
• With steel pole Size 2.0mm dia with tilting type
• With steel pole Size 2.mm dia without tilting type
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.
We offer a wide range of very high quality Plane Table Accessories that are suitable for maps preparation and recording topography in various engineering surveys.
This outfit consists of a plane table board with a fitted tripod.
These products undergo various quality tests at each level of its production to ensure good quality and flawless performances.
These products are basically used in the construction industry for the purpose for surveying the land for commercial use.
• Made of Aluminium/brass.
• Size 100mm, 125 mm, 150 mm dia.
• Complete in Case with Aluminium Telescopic/Rigid/Wooden Tripod.
• Aluminium circle consist of a needle graduated to 30min (0.5) graduations.
• Painted with water proof paints.
• Carrying cases are made of Fibre with carrying straps. Least count 30'.
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.
Consists of telescope eyesight and an adjustable tubular spirit level, which is connected to a semicircular protractor scale and vernier marked in both slope and degrees (90°).
A magnifier glass assists in accurate reading the degree of inclination from vernier.
• Compass survey is a method of surveying by taking bearings and linear distances to produce plan.
• Bearing is measured using prismatic compass, while the linear distance is measured using measuring tape.
• Bearing in compass surveying means angle is made by chain line or survey line by referring it to magnetic meridian or magnetic north.
The Plane Table Surveying Instruments include standard accessories like Trough Compass, Spirit level, Canvas cover, Plumbing Fork etc., and is also with a fitted tripod.
Uses of Plane Table in Engineering Surveys:
• Maps preparation
• Recording topography
Accessories included in Plane Table Surveying Instruments:
• Plane Table Board 750 x 600 mm, thickness 22mm & 16mm
• Carrying Bag for Board
• Teak wood Polished Stand
• Stand Rigid Brass Head & Plate,
• Magnet Trough compass brass
• Spirit Level brass
• Sight van 24"
• Plumbing Fork
• Plumb Bob
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