The present disclosure discloses an intelligent interactive interface, comprising: an interface underlayer drawn from trajectory formed by measurement; a plurality of identifications disposed on the interface underlayer, each of the identifications corresponds to an external device, information of the external device is uploaded in real time, displayed on the interface underlayer and can be stored on a server, and a mapping relationship is established between the information of the external device and the corresponding identification of respective external device; a terminal apparatus is connected to the external device and displays the interface underlayer, identifications and control and/or exchange information with the external device; wherein the information of the external device is displayed in real time on the terminal apparatus through the identifications, the identifications can be added or deleted in real time. The present disclosure implements functional interactions such as controlling, monitoring an external device by a terminal apparatus. The present disclosure also implements various functions such as curve line measurement, dotting, identification description, synthesis of a measurement drawing and a real scene, remote real-time monitoring, etc.

The present invention relates generally to measuring lengths. Typically one would use a ruler or tape ruler to measure units of distance, and to measure surface area of objects of a variety of shapes and sizes. However, in existing technology when using a ruler or tape ruler one cannot measure objects with complex shapes and sizes such as objects with a curved path, curved shape or irregular shape. Therefore, this new invention of Tapeless Measure Gauge provides a handheld digital rolling measuring gauge in a single item solution to accurately measure such objects varying from a flat surface, to a curved surface or shape or irregular shape.

The present invention relates generally to measuring lengths. Typically one would use a ruler or tape ruler to measure units of distance, and to measure surface area of objects of a variety of shapes and sizes. However, in existing technology when using a ruler or tape ruler one cannot measure objects with complex shapes and sizes such as objects with a curved path, curved shape or irregular shape. Therefore, this new invention of Tapeless Measure Gauge provides a handheld digital rolling measuring gauge in a single item solution to accurately measure such objects varying from a flat surface, to a curved surface or shape or irregular shape.

The disclosure relates to an outer dimension measurement apparatus for tubulars. The apparatus includes a first wheel and a second wheel, which may be applied to different sections of a tubular. The ratio between the outer dimensions of the different sections may be estimated based on the relationship between the rates of rotations of the first and second wheels when the tubular is rotated. The apparatus may include a tubular rotation sensor that, with either the first wheel or the second wheel, may be used to determine the outer dimension of the tubular at the point along the tubular's length when the respective wheel is applied. The methods include estimating a ratio between outer dimensions of sections of a tubular and estimating the outer dimension of the tubular at a specific point along its length using embodiments of the apparatus.

The disclosure relates to an outer dimension measurement apparatus for tubulars. The apparatus includes a first wheel and a second wheel, which may be applied to different sections of a tubular. The ratio between the outer dimensions of the different sections may be estimated based on the relationship between the rates of rotations of the first and second wheels when the tubular is rotated. The apparatus may include a tubular rotation sensor that, with either the first wheel or the second wheel, may be used to determine the outer dimension of the tubular at the point along the tubular's length when the respective wheel is applied. The methods include estimating a ratio between outer dimensions of sections of a tubular and estimating the outer dimension of the tubular at a specific point along its length using embodiments of the apparatus.

The invention relates to a device and a method for cooling a roll. The roll concerned can be a roller in a roll stand or a measuring roll. The device comprises a cooling shell having a cross section in the shape of a section of a circular arc, for covering a surface region of the roll (200), wherein, in the region of an edge of the cooling shell, a bearing is formed with a pivot joint (120) with an axis of rotation running perpendicular to the circular arc-shaped cross-section, for pivoting the cooling shell about the axis of rotation. According to the invention, in order to ensure that the size of the cooling gap during the rolling operation or during the operation of a measuring roll is always autonomously optimally set, the bearing has a degree of freedom in radial direction r with respect to the circular arc-shaped cross-section of the cooling shell, such that the cooling shell is mounted in the bearing in such a way as to be freely movable in the radial direction.

The invention relates to a device and a method for cooling a roll. The roll concerned can be a roller in a roll stand or a measuring roll. The device comprises a cooling shell having a cross section in the shape of a section of a circular arc, for covering a surface region of the roll (200), wherein, in the region of an edge of the cooling shell, a bearing is formed with a pivot joint (120) with an axis of rotation running perpendicular to the circular arc-shaped cross-section, for pivoting the cooling shell about the axis of rotation. According to the invention, in order to ensure that the size of the cooling gap during the rolling operation or during the operation of a measuring roll is always autonomously optimally set, the bearing has a degree of freedom in radial direction r with respect to the circular arc-shaped cross-section of the cooling shell, such that the cooling shell is mounted in the bearing in such a way as to be freely movable in the radial direction.

A harvester head having at least one hydraulic actuator with a cylinder and a piston. The hydraulic actuator having at least a cylinder chamber and a piston rod chamber, both chambers being connected to a hydraulic circuit. The piston separating the cylinder chamber and the piston rod chamber, a cavity provided in the piston, hydraulically connecting the cylinder chamber with the piston rod chamber and a check valve in connection with the cavity that allows hydraulic medium flow in an opening direction of the check valve.

A harvester head having at least one hydraulic actuator with a cylinder and a piston. The hydraulic actuator having at least a cylinder chamber and a piston rod chamber, both chambers being connected to a hydraulic circuit. The piston separating the cylinder chamber and the piston rod chamber, a cavity provided in the piston, hydraulically connecting the cylinder chamber with the piston rod chamber and a check valve in connection with the cavity that allows hydraulic medium flow in an opening direction of the check valve.

Various embodiments of tools with integrated measurement devices are described. An apparatus may include a tool to be applied to a workpiece, an integrated measurement device in a feed path of the tool, and a controller. The integrated measurement device may generate signals indicative of rotation of a roller in a feed path of a workpiece. The controller may generate, based on the signal, a distance measurement of the workpiece. The distance measurement may indicate a distance between an end of the workpiece and a location of the workpiece to which the tool is to be applied.