Abstract: The invention relates to a method and a device for measuring the thickness of thin layers over large-area surfaces to be measured (12), in which at least one measuring probe (28), which comprises at least one sensor element (29) and at least one contact spherical cap (31) associated with the sensor element (29), is applied to the surface to be measured (12) in order to obtain a measured value, wherein the large-area surface to be measured (12) is subdivided into individual partial areas (14), a matrix of measurement points (16) is determined for each partial area (14) to be inspected, measured values are ascertained at equidistant measurement points (16) along at least one row (17) of the matrix of the partial area (14) using a device (21) carrying the at least one measuring probe (28), and the measured values are ascertained successively for all rows (17) in the matrix in the partial area (14) and evaluated for this partial area (14).

Abstract: The present invention discloses a system for synchronously controlling the testing of pluralities of devices, comprising a server, a switch coupled to the server, and a testing instrument coupled to the server. Pluralities of computers are coupled to the server respectively, wherein the pluralities of devices are respectively connected to the pluralities of computers and the switch under testing. The parameters of the pluralities of devices include a first type test item that is testable by the pluralities of computers, and a second type test item that is testable by the testing instrument. The switch includes a RF switch. The server is connected to the testing instrument by a GPIB cable (or other instrument control interface and the server is connected to the pluralities of computers via local area network (LAN) such as Ethernet.

Abstract: In a state of separating a front end face of an air injecting nozzle 23 from a worked work W by a predetermined interval h, the air injecting nozzle 23 is moved at a constant speed in an X axis direction, injects air from an injecting hole 27a of a nozzle main body 27 and is moved to pass centers O1, O2 of worked holes Wb, Wc of the work W. A variation in a pressure is measured by a pressure measuring unit 30. X axis coordinates of the centers O1, O2 of the holes Wb, Wc, a hole diameter E and a center interval distance D1 are calculated based on coordinates of center points T1, T2 of inclined portions Ld, Lu of a curve Lx of the pressure relative to the measured X axis coordinate.

Abstract: In a measuring apparatus 10, an arm 36 is lowered to insert a measuring sphere 30 into a hole 22A in a workpiece 22, and further the measuring sphere 30 is lowered in the depth direction of the hole 22A. Thereby, the back pressure of compressed air is detected at a plurality of locations by an A/E (air/electricity) converter 18. The detected value is compared with the master reference value by a controller 20 to convert the detected value into the inside diameter of the hole 22A. Thereby, the shape of various holes can be measured.

Abstract: To test closed containers, e.g. with regard to residual air volume or the quality and tightness of the closures which are attached to containers, mechanical oscillations are excited in the closure, the mechanical oscillations are analyzed, measurement values are derived from this, these measurement values are compared with pre-set values for acceptable closures and a signal is produced which states whether the measurement value corresponds to a value for an acceptable closure. To increase the reliability of the test, the oscillation properties of the closure blanks (R) are also ascertained before their attachment to the containers (B) and the range of acceptable values of the closures (V) attached to the containers (B) is chosen according to the oscillation properties of the corresponding closure blank (R). The closure blanks (R) can be classified according to their oscillation properties.