A profiling machine includes an inclinometer and a displacement sensor. The inclinometer is configured to sense an incline of the profiling machine on a surface relative to the acceleration vector of gravity. The displacement sensor is configured to sense the distance that profiling machine has traversed along the surface. The profiling machine is configured to calculate and generate a surface profile of the surface based on incline data from the inclinometer and displacement data from the displacement sensor.

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.

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.

The method for detecting the configuration of elongated elements includes the steps of providing along a supply line (A) a drawing and/or straightening assembly (4) for an element (2), a detection station (S) downstream of the drawing and/or straightening assembly, a detection assembly (3) comprising at least a first contact member (31, 32, 31a, 31b, 32a, 32b) arranged in the detection station (S) and shaped to interact in contact with the element (2) to force the element (2) along the supply line (A) if the configuration of the element (2) deviates with respect thereto. Said at least first contact member (31, 32, 31a, 31b, 32a, 32b) is associated with a sensor device (33, 33) comprising a sensitive element (35, 35′) configured to emit an signal indicating a stress produced by the contact between said at least first contact member (31, 32, 31a, 31b, 32a, 32b) and the element (2), at least when the element (2) is forced along the supply line (A).

The present invention relates to a measuring device for characterising a shape of a surface of an item, such as a wind turbine blade fibre layup, wherein the measuring device comprises: a frame comprising a holding frame, a first set of two or more probes movably held in the holding frame, each probe having a respective probe end for contacting the surface of the item, and electronic sensing means configured to provide for each probe a respective electrical signal representative of a position of the probe relative to the holding frame. A method for calibrating such a device is provided. Further, a method for characterising a shape of a surface of an item is provided.

The present disclosure discloses a method and a device for measuring flatness of a flexible photovoltaic module, comprising: a measurement platform configured to fix a to-be-measured flexible photovoltaic module, height measurers respectively corresponding to wave crests and wave troughs on the to-be-measured flexible photovoltaic module, the plurality of height measurers being located above the measurement platform, and a lift rack on which the plurality of height measurers are disposed. According to the present disclosure, by lowering of the lift rack, the height measurers are driven to come into contact with the respective wave crests and wave troughs on the to-be-measured flexible photovoltaic module, so as to measure the height of the wave crests and the wave troughs, which reduces measurement errors brought forth by the fact that the measurement cannot be performed in proper time due to local deformation of the cell module, moreover, due to the support of the lift rack, there is no need to manually move the measuring device back and forth, which thereby reduces the measuring device's scratching the to-be-measured flexible photovoltaic module, and in addition, the present disclosure enables direct and simultaneous measurement of a plurality of wave crests and wave troughs, which greatly improves the measuring efficiency.

Some embodiments of the disclosure provide a flatness detection device. In an embodiment, the flatness detection device includes a back plate, an electromagnet, a cross beam, a probe, and a limiting frame. The limiting frame and the electromagnet are provided side by side on the back plate. The cross beam is located above the limiting frame and the electromagnet. The probe vertically penetrates the cross beam and the limiting frame. A spring is provided between the cross beam and the electromagnet. The spring is movable in a vertical direction by a guide, the movement being at least one of compression and extension.

A procedure is provided for evaluating the score, snap and edge appearance of wallboard panels, and includes scoring a wallboard panel with a knife at a constant and known force using a benchtop board scoring device; snapping the scored panel in a Universal Board Testing Machine to measure the breaking force, forming a snapped panel edge; measuring a cleanliness of the snapped panel edge by placing a straight edge against the snapped panel edge and measuring gaps between the snapped panel edge and the straight edge in a plurality of locations on a face of the panel, and a plurality of locations on a back of the panel; and averaging all of the measured gaps to create an Index Score.

A flatness sensing device includes a pressure sensing unit and a controller. The pressure sensing unit includes a plate portion, and a pressure sensor fixed and exposed at an edge of the plate portion. A sensing surface of the pressure sensor is flush with the bottom surface of the plate portion. The pressure sensor senses a pressure or lack of pressure of an object to be tested when it touches the object to be tested. The controller receives the pressure value output from the pressure sensor and determines a flatness of the object to be tested, the controller can issue an alarm on finding non-flatness and cause the degree of flatness to be displayed to a user.

A jig for inspecting a display module, the display module including a display module body and a lug, the jig including a bottom plate and a cover plate, the cover plate operatively covering the bottom plate; the bottom plate being provided with a first flat portion and the cover plate being provided with a second flat portion, wherein the bottom plate is provided with a first concave portion surrounded by the first flat portion, and/or the cover plate provided with a second concave portion surrounded by the second flat portion, the first concave portion and/or the second concave portion form(s) a receiving area for the display module body, and the first flat portion and the second flat portion are configured to clamp the lug.