A rotation detector includes the following: a rotor and stators comprising a rotor substrate and stator substrates, each of which is a multilayer substrate; a rotor coil provided on the rotor substrate; and detection coils provided on the stator substrates. The frequency of an excitation signal used by said rotation detector is set so as to be higher than a prescribed frequency that would be required if the rotor and the stators were each made of a magnetic material.

A fabrication and monitoring device for micro probe ball tips includes a magnetic field generator, a 3-dimensional displacement adjusting mechanism, a wire supplier and an image monitoring system. The magnetic field generator includes a U-shaped electromagnet. The 3-dimensional displacement adjusting mechanism includes a 2-dimensional moving platform, a 1-dimensional moving platform, a guiding tube, and a sparking plug. The wire supplier includes a transmission wheel, a pressing roller, a wire feeding roller and a tungsten wire material supplier. The image monitoring system includes a micro objective, a third-generation infinite beam structure lens and a supporting frame. The present invention overcomes an eccentric problem of a tungsten ball and a tungsten rod, and also overcomes a sphericity problem caused by gravity, so as to improve sphericity, eccentric accuracy and enable monitoring of dynamic manufacturing process of the probe ball tips.

A rotor assembly for deployment within a momentum control device that enables near-zero revolutions per minute (RPM) sensing, and method for making same, are provided. The provided rotor assembly utilizes a magnet coupled to the rotor shaft and a stationary sensor element to detect magnetic flux from the magnet and derive reliable near zero RPM therefrom.

A tool capable of creating and measuring circles and circular profiles of any size without the need for a pivoting center arm. Circle size can be selectively adjusted and held, and both the inside and outside of tool creates and measures circles of a near infinite number of size. The tool contains marking rules such as radius, diameter, arc length, circumference, sector area, area of a circle for any size circle, etc., obviating the need for calculating the same, and any or a combination of unit measure systems can be employed.

A tool capable of creating and measuring circles and circular profiles of any size without the need for a pivoting center arm. Circle size can be selectively adjusted and held, and both the inside and outside of tool creates and measures circles of a near infinite number of size. The tool contains marking rules such as radius, diameter, arc length, circumference, sector area, area of a circle for any size circle, etc., obviating the need for calculating the same, and any or a combination of unit measure systems can be employed.

A tape measure including a reinforced or coated tape measure blade is provided. The reinforcement layer is thicker than the metal inner layer of the tape blade. The reinforcement layer provides a reinforced tape blade such that the elongate tape blade may have a pinch load threshold of greater than 30 lbs. and/or a pinch height at break of less than 1.5 mm.

A tape measure including a reinforced or coated tape measure blade is provided. The reinforcement layer is thicker than the metal inner layer of the tape blade. The reinforcement layer provides a reinforced tape blade such that the elongate tape blade may have a pinch load threshold of greater than 30 lbs. and/or a pinch height at break of less than 1.5 mm.

The invention relates to a method for producing a device lot measuring deformations on a ceramic matrix composite part, and to the corresponding part. Said method for producing a device (3) for measuring deformations on a ceramic matrix composite part (1), in particular an aeronautical part, according to which an electrically insulating coating (2) is first formed on the part (1) and a deformation gauge (3) is subsequently placed on the coating (2), is in particular characterised in that the coating (2) comprises a rare earth oxide.

The invention relates to a method for producing a device lot measuring deformations on a ceramic matrix composite part, and to the corresponding part. Said method for producing a device (3) for measuring deformations on a ceramic matrix composite part (1), in particular an aeronautical part, according to which an electrically insulating coating (2) is first formed on the part (1) and a deformation gauge (3) is subsequently placed on the coating (2), is in particular characterised in that the coating (2) comprises a rare earth oxide.

A tape measure including a reinforced or coated tape measure blade is provided. The reinforcement layer is thicker than the metal inner layer of the tape blade. The reinforcement layer provides a reinforced tape blade such that the elongate tape blade may have a pinch load threshold of greater than 30 lbs. and/or a pinch height at break of less than 1.5 mm.