A measurement system to measure at least one of a height and a thickness of an edge ring in a plasma processing chamber includes an ultrasound transducer configured to output an ultrasound signal into the edge ring and to receive a reflected signal from the edge ring. A controller is configured to cause the ultrasound transducer to generate the ultrasound signal and to determine a thickness of the edge ring based on timing of the ultrasound signal and the reflected signal.

A hardboard installation support apparatus for mounting hardboard for board and batten siding installations includes a support bracket having a bracket front side, a bracket back side, a bracket top edge, a bracket bottom edge, a bracket left edge, and a bracket right edge. The supper bracket has a pair of mounting apertures extending from the bracket front side through the bracket back side. The pair of mounting apertures receives hardware to engage a building. A measurement indicator is coupled to the bracket front side and indicates a vertical distance from the bracket bottom edge. A support lip is coupled to the support bracket. The support lip is coupled to the bracket bottom edge and extends away from the bracket front side. The support lip and the bracket front side form an angle between 90° and 100°.

The invention relates to a casting apparatus (1) for the production of a cast sheet (10) of homogenized tobacco material, said casting system comprising: ⋅a casting box (4) adapted to contain a slurry of the homogenized tobacco material; ⋅a movable support (7); ⋅a casting system adapted to deposit the slurry contained in the casting box (4) onto the movable support (7) so as to form the cast sheet (10); ⋅a sensor (30) to detect a thickness of the cast sheet (10); ⋅wherein the sensor (30) includes a slider (33) comprising a planar surface (36) adapted to be in contact to a top surface of the cast sheet and a height detector (38) adapted to measure the height of the planar surface (36) so as to derive the thickness of the cast sheet (10). The invention also relates to a method to measure the thickness of a homogenized tobacco sheet (10).

A device measures a frictional force and a film thickness of a lubricating oil film in different surface velocity directions. The device includes an experiment bench. A translation stage is mounted to the experiment bench, and is linearly movable. A main shaft system is mounted to the experiment bench. A glass disc is mounted to the main shaft system and is rotatable. An arcuate guide rail is disposed on the translation stage. A rotary base is mounted to the arcuate guide rail and is movable along the arcuate guide rail. A loading system is mounted to the rotary base. A steel ball of the loading system and the glass disc are movable relative to each other. A rotary bearing in the rotary base is configured to convert a frictional force generated from the relative movement to a pressure allowed to be collected by a pressure sensor on the rotary base.

An apparatus for checking the length (H) of a chamfer (7) delimited by a first surface (5) and by an edge (S), comprises two feelers (15, 25)—movably connected to a same supporting frame (20)—and respective transducers (16,26). The transducers supply signals (T1, T2) indicative of displacements of the respective feelers along mutually perpendicular directions (Y, X). A checking method includes moving the supporting frame at a constant speed so that, during the movement, one of the feelers scans the chamfer and the other cooperates with the first surface. The signals of the respective transducers are acquired and transmitted synchronously to a processing unit (40) which processes them together with information on the mutual position of the two feelers to obtain the length of the chamfer.

An apparatus for checking the length (H) of a chamfer (7) delimited by a first surface (5) and by an edge (S), comprises two feelers (15, 25)—movably connected to a same supporting frame (20)—and respective transducers (16,26). The transducers supply signals (T1, T2) indicative of displacements of the respective feelers along mutually perpendicular directions (Y, X). A checking method includes moving the supporting frame at a constant speed so that, during the movement, one of the feelers scans the chamfer and the other cooperates with the first surface. The signals of the respective transducers are acquired and transmitted synchronously to a processing unit (40) which processes them together with information on the mutual position of the two feelers to obtain the length of the chamfer.

The present application relates to a U-shaped touch gauge, which comprises a base plate, a transfer plate, a floating column, a fixing block, a measuring sleeve, a measuring column and the like. In use, round head of top end of the floating column is in contact with bottom surface of a work piece. The floating column is compressed downward when it contacts high surface of the bottom surface of the work piece, left side of the transfer plate is depressed and then right side thereof is lifted, in the meantime, the right spring is compressed and the measuring column is lifted.

An apparatus to grade a surface is provided. The apparatus includes an elongated member with a straight edge to grade a surface. In addition, the apparatus includes a height gauge to attach to an end of the elongated member. The height gauge is to engage a border of the surface. Furthermore, the apparatus includes a connector to connect the height gauge to the elongated member. The apparatus also includes a first surface on the height gauge. The first surface is to engage a side wall of the border to grade the surface proximate to the side wall. The apparatus further includes a second surface on the height gauge offset from the straight edge by a distance. The second surface is to engage a top surface of the border such that the straight edge is to grade the surface at the distance below the top of the border.

In some examples, a device can be used for measuring a length of a wear indicator on a brake assembly. The device includes a moveable component configured to move based on contact with the wear indicator. The device also includes a sensor configured to detect a displacement of the moveable component. The device further includes processing circuitry configured to determine the length of the wear indicator based on the displacement of the moveable component detected by the sensor.

In some examples, a device can be used for measuring a length of a wear indicator on a brake assembly. The device includes a moveable component configured to move based on contact with the wear indicator. The device also includes a sensor configured to detect a displacement of the moveable component. The device further includes processing circuitry configured to determine the length of the wear indicator based on the displacement of the moveable component detected by the sensor.