2) The altitude above mean sea level. This is important for long range precision shooting because the air density changes with elevation and affects the path of the bullet. Extractor* A device that withdraws or elevates a fired shell casing or a live round from the chamber as the breech mechanism is opened.
The rebec (sometimes rebecha, rebeckha, and other spellings, pronounced /ËriËbÉk/ or /ËrÉbÉk/) is a bowed stringed instrument of the Medieval era and Renaissance era. In its most common form, it has a narrow boat-shaped body and 1-5 strings.he instrument was used by dance masters until the 18th century, however, often being used for the same purpose as the kit, a small pocket-sized violin. The rebec also remained in use in folk music, especially in eastern Europe and Spain. Andalusi nubah, a genre of music from North Africa, often includes the rebec.
Kemp's Jig variation. The hurdy-gurdy is the first stringed instrument to which the keyboard principle was applied. The French name, Viella a Roue (wheel fiddle), describes the method by which sound is produced. The bowing action of the fiddle is replaced by a wheel cranked by a handle.The outer rim of the wooden wheel is coated with resin.he hurdy-gurdy is the first stringed instrument to which the keyboard principle was applied. The French name, Viella a Roue (wheel fiddle), describes the method by which sound is produced.