Abstract: A system for the reference marking of the position of a machine tool relative to the machine. Use is made of a camera, which compares two perpendicular images of a standard having a known position with corresponding images, whcih are then displayed, of the tool. No dismantling of the tool or the tool holder turret is required. A particular application is to turning and numerically controlled machines.

Abstract: This invention relates to an apparatus for producing textured products which comprises means for producing a dispersion of raw products, means forming filaments from the dispersion, means establishing a fluid medium, means for feeding the filaments into the fluid medium, and means for coagulating the filaments. Given .DELTA.v, the difference between the speed at which the fluid medium travels and the speed at which the filaments are introduced into the fluid medium, the apparatus can be adjusted in the following manner:.DELTA.v < 0,product: cotton-like bundle of cut-up filaments;.DELTA.v = 0,product: filament with large cross-section and undulated outer surface;.DELTA.v > 0,product: thread-like continuous filament with small cross-section.