Tribrach

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.

Description

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.

Features :

• Export quality. • Reasonable price. • Customer centric organization. • Customizable.

Specifications:

• Size: 54 X 34 X 22 + 8 CM. • Material: Green Bamboo, Natural and Environmental.

Description

This cost-effective Electronic Digital Theodolite provides excellent performance, reliable quality and practical operation for any construction application. The body style is similar to a Topcon Digital Theodolite and is combined with easy to use operation. The smart appearance and reasonable structure is as attractive as its price. • Tribrach. • AA Rechargeable Batteries (4 each). • Lens Cap. • Operator's Manual. • Hard carrying case.

Description

• 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.