Tripple Prism Set

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.

Description

Our expertise enables us to develop a broad range of measuring and survey equipment and instruments such as Line Rangers. Manufactured using high grade metal and alloys, these line rangers can be availed in standard as well as customized sizes and specifications. Used for various testing and measuring activities by our clients, our range can be availed at most descent prices.

Description

We are supply of Octagonal Cross Staff as per the set industry Standards.

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.