The present invention provides a surface following nozzle, an observation device for a moving object surface, and an observation method for the moving object surface that can remove water in the vicinity of the nozzle while following changes in the shape and changes in the distance of a moving object. A surface following nozzle includes a nozzle that injects gas from a tip end thereof, a separating part that closes a base end of the nozzle, and an extending and contracting part that is provided at a rear side of the nozzle via the separating part, and extends and contracts along an axial direction of the nozzle. The extending and contracting part includes an elastic body that applies a forward force with respect to the nozzle.

The present invention provides a surface following nozzle, an observation device for a moving object surface, and an observation method for the moving object surface that can remove water in the vicinity of the nozzle while following changes in the shape and changes in the distance of a moving object. A surface following nozzle includes a nozzle that injects gas from a tip end thereof, a separating part that closes a base end of the nozzle, and an extending and contracting part that is provided at a rear side of the nozzle via the separating part, and extends and contracts along an axial direction of the nozzle. The extending and contracting part includes an elastic body that applies a forward force with respect to the nozzle.

A measurement system includes a measurement device to detect measurement information relating to a position-modifiable component of a printing station during movement thereof. A calculation unit receives the measurement information from the measurement device. The calculation unit determines actual-position data of the position-modifiable component from the measurement data received and compares it with predetermined reference-position data to determine calibration information based on the actual-position data and the reference-position data. An interface permits then permits transfer of this calibration information.

The invention relates to a device for monitoring the contact of a workpiece (1) or tool on a spindle (2) of a machine tool, which device has a contact surface (3) for the workpiece (1) or tool. At least one measurement nozzle (4) is arranged in the region of the contact surface in order to produce a fluid flow directed away from the contact surface (3). Upstream of the measurement nozzle, the fluid flow is conducted through a vacuum nozzle, which can comprise a jet nozzle (7c) and a collector nozzle (7b). When the fluid medium flows through the vacuum nozzle, the vacuum nozzle produces a negative pressure in a negative pressure chamber (9c). A pressure sensor (6) or pressure switch senses a measurement pressure (p3) in the negative pressure chamber.

The invention relates to a device for monitoring the contact of a workpiece (1) or tool on a spindle (2) of a machine tool, which device has a contact surface (3) for the workpiece (1) or tool. At least one measurement nozzle (4) is arranged in the region of the contact surface in order to produce a fluid flow directed away from the contact surface (3). Upstream of the measurement nozzle, the fluid flow is conducted through a vacuum nozzle, which can comprise a jet nozzle (7c) and a collector nozzle (7b). When the fluid medium flows through the vacuum nozzle, the vacuum nozzle produces a negative pressure in a negative pressure chamber (9c). A pressure sensor (6) or pressure switch senses a measurement pressure (p3) in the negative pressure chamber.

A gap measurement tool assembly for measuring a gap at a through hole between mating parts of a structure is provided. The assembly includes a gap measurement tool with a first end, a second end, and a body having a hollow inner channel, an exterior annular crevice, a first exterior annular groove having a cross-hole intersected by the hollow inner channel, and a second exterior annular groove. The assembly includes a first seal element, a second seal element, and a third seal element. The assembly is configured for insertion and sealing into the through hole, and the cross-hole is configured to align with the gap. When compressed air is passed into the gap, an air gage system takes a measurement of one of, a back pressure, an air flow, or a differential pressure, and correlates the measurement to a predetermined gap measurement, to determine a gap size of the gap.

A gap measurement tool assembly for measuring a gap at a through hole between mating parts of a structure is provided. The assembly includes a gap measurement tool with a first end, a second end, and a body having a hollow inner channel, an exterior annular crevice, a first exterior annular groove having a cross-hole intersected by the hollow inner channel, and a second exterior annular groove. The assembly includes a first seal element, a second seal element, and a third seal element. The assembly is configured for insertion and sealing into the through hole, and the cross-hole is configured to align with the gap. When compressed air is passed into the gap, an air gage system takes a measurement of one of, a back pressure, an air flow, or a differential pressure, and correlates the measurement to a predetermined gap measurement, to determine a gap size of the gap.

A lithography apparatus is disclosed, which comprises a mirror having at least two mirror segments which are joined together in such a way that an interspace is formed between the mirror segments, and a sensor for detecting the relative position of the mirror segments, wherein the sensor is arranged in the interspace between the mirror segments.

A linear gauge includes a contact member having a lower tip to be positioned facing a workpiece; an air slider including a cylinder surrounding the contact member with a clearance left between them, and configured to eject air such that the contact member is supported movably in a vertical direction; a scale that detects a height position of the contact member; a casing accommodating therein the contact member, the air slider, and the scale; an evacuation portion formed in an upper portion of the cylinder such that the ejected air is evacuated into the casing; and a communication channel communicating an inlet, which is formed in an upper portion of the contact member, and an outlet, which is formed in the lower tip of the contact member, with each other inside the contact member.

The invention relates to a device and a method for a contactless analysis of a product, in particular for the contactless analysis of a dough product. The device comprises a distance sensor configured for measuring a distance between the device and the product, and a nozzle configured for directing a jet of pressurized fluid to a position on a surface of said product. The distance sensor is arranged for measuring the distance between the device and the position of the surface where the jet of pressurized fluid is directed to. Preferably, the distance sensor is at least partially arranged in the nozzle, preferably substantially in the center of said nozzle.