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A level staff, also called levelling rod, is a graduated wooden or aluminium rod, used with a levelling instrument to determine the difference in height between points or heights of points above a vertical datum. When used for stadiametric rangefinding, the level staff is called a stadia rod.
Stadia readings used in surveying can be taken with modern instruments such as transits, theodolites, plane-table alidades and levels. When using the stadia measuring method, a level staff or stadia rod is held so that it appears between two stadia marks visible on the instrument's reticle.
The Church of England has augmented the RCL by the provision of readings for second and third services. Thus the RCL lectionary is used for the "Principal Service", which often takes the form of a Eucharist, while allowing for additional material at other services which may be Morning and Evening Prayer (though provision is made for either ...
The Roman Rite of the Latin Church of the Catholic Church is the most widely used liturgical rite. The titles of some of these books contain the adjective "Roman", e.g. the Roman Missal, to distinguish them from the liturgical books for the other rites of the church.
The development of the Ordo Lectionum Missae was a response to the liturgical reforms initiated by the Second Vatican Council (1962-1965), with the aim of promoting active participation of the laity in the Mass. Prior to the council, the Roman Catholic Church adhered to a one-year cycle of readings, incorporating a limited selection of passages.
Before 1971, the official form for the Latin Church was the Breviarium Romanum, first published in 1568 with major editions through 1962. The Liturgy of the Hours, like many other forms of the canonical hours, consists primarily of psalms supplemented by hymns, readings, and other prayers and antiphons prayed at fixed prayer times. [7]
A Philadelphia rod is a level staff used in surveying. The rod is used in levelling procedures to determine elevations and is read using a level. A Philadelphia rod consists of two sliding sections graduated in hundredths of a foot. On the front of the rod the graduation increasing from zero at the bottom.
Diagram showing relationship between two level staff, or rods, shown as 1 and 3. The level line of sight is 2. The surveyor looks through the eyepiece of telescope while an assistant holds a vertical level staff which is graduated in inches or centimeters. The level staff is placed vertically using a level, with its foot on the point for which ...