in larger Turkish manufactures, but is also found in Persia and India. It consists of two movable beams to which the warps are attached. Both beams are fitted with ratchets or similar locking devices. Once a section of the carpet is completed, is rolled on to the lower beam. On a roller beam loom, any length of carpet can be produced. In some areas of Turkey several rugs are woven in series on the same warps, and separated from each other by cutting the warps after the weaving is finished. The Iranian names for the parts of the loom are: , the upper beam (horizontal, equivalent to the warp beam) , the lower beam (horizontal, equivalent to the breast beam, especially whent eh fell is wrapped arounded it ) , the right post (upright); sometimes used for both posts , the right post (upright) of or , the wedges regulating the height of the zirdar to tension the warp. , weaver's bench, which may be adjustable in height. A horizontal loom also has four pegs to hold it in the ground. Tools The weaver needs a number of essential tools: a knife for cutting the yarn as the knots are tied; a heavy comb-like instrument with a handle for packing down the wefts; and a pair of shears for trimming the pile after a row of knots, or a small number of rows, have been woven. In Tabriz the knife is combined with a hook to tie the knots, which speeds up work. A small steel comb is sometimes used to comb out the yarn after each row of knots is completed. A variety of additional instruments are used for packing the weft. Some weaving areas in Iran known for producing very fine pieces use additional tools. In Kerman, a saber like instrument is used horizontally inside the shed. In Bijar, a nail-like tool is inserted between the warps, and beaten on in order to compact the fabric even more. Bijar is also famous for their wet loom technique, which consists of wetting the warp, weft, and yarn with water throughout the weaving process to compact the wool and allow for a particularly heavy compression of the pile, warps, and wefts. When the rug is complete and dried, the wool and cotton expand, which results in a very heavy and stiff texture. Bijar rugs are not easily pliable without damaging