Jacob's staff

In the past, many surveyor's instruments were used on a Jacob's staff.

Metius also manufactured astronomical instruments, and developed a special form of Jacob's staff.

For the plant known as the ocotillo, sometimes called the Jacob's staff, see ocotillo.

The Jacob's staff, when used for astronomical observations, was also referred to as a radius astronomicus.

Some devices, such as the modern optical targets for laser-based surveying, are still in common use on a Jacob's staff.

He is also credited to have invented the Jacob's staff, an instrument to measure the angular distance between celestial objects.

Jacob's staff, a tool used in surveying.

Instead of a handle on the frame, they had a socket to allow the attachment of a surveyor's Jacob's staff.

This variant of the instrument is not correctly termed a Jacob's staff but is a cross-staff.

The original Jacob's staff was developed as a single pole device in the 14th century that was used in making astronomical measurements.

When topped with a scallop shell a pilgrim's staff, or "Jacob's staff", is the sign of a pilgrim.

The term Jacob's staff, also cross-staff, a ballastella, a fore-staff, or a balestilha, is used to refer to several things.

After the jamboree the Jacob's staff became the award of gratitude for the Netherlands Scout organizations.

The Jacob's staff, known as 'Yasti-yantra', was used by Bhāskara II.

With the demise of the cross-staff, in the modern era the name "Jacob's staff" is applied primarily to the device used to provide support for surveyor's instruments.

During the Renaissance, the Dutch mathematician and surveyor Metius is known to have developed his own Jacob's staff.

Johannes Müller, called Regiomontanus, made the Jacob's staff in the 15th century to a popular instrument in geodesic and astronomical measurements.

JACOB'S STAFF, an instrument for taking altitudes and distances.

The symbol used for the world jamboree is the Jacob's staff which was used during the exploration of new territories in the Age of Discovery by Dutch sailors.

Similarly Jacob's Staff and Peter's Staff were European biblical derived terms, as were the Three Magi, or the Three Kings.

In surveying the Jacob's staff, contemporaneously referred to as a jacob staff, is a single straight rod or staff made of nonferrous material, pointed and metal-clad at the bottom for penetrating the ground.

His description of an ancient crossbow mechanism which he himself unearthed proved to be a Jacob's staff, a surveying tool which wasn't known in Europe until described by Levi ben Gerson in 1321.

Needham asserts Shen had discovered the survey device known as Jacob's staff, which was not described elsewhere until the Provençal Jewish mathematician Levi ben Gerson (1288-1344) wrote of it in 1321.

In 1851, Whish served in India under the 14th Light Dragoons as an interpreter and bazaar master, officer of public works and assistant quartermaster general of cavalry on General Jacob's staff during the Persian campaign of 1856.

Along with new navigational techniques such as the dry compass, the Jacob's staff and the astrolabe, these allowed economic and military control of the seas adjacent to Europe and enabled the global navigational achievements of the dawning Age of Exploration.