Octangonal Cross Staff

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

• 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

Description

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.