A stadiometer includes a cap portion to be worn on a head of a user; a connecting portion having a first end coupled to the cap portion and a measuring portion coupled to a second end of the connecting portion. The measuring portion includes a plurality of sensors and a measuring rod. The stadiometer also includes a height measuring plate contactable by the plurality of sensors and the measuring rod. The sensors and measuring rod are configured such that measuring rod is horizontal when the height measuring plate is contacted by the plurality of sensors simultaneously. The measuring rod is configured to contact the height measuring plate when the height measuring plate is contacted by the plurality of sensors simultaneously.

A device and a method for measuring a rotation angle of a spherical hinge joint with a football-shaped structure are provided. The measuring device includes a driving electrode, and an induction electrode system. During measurement, the driving electrode and induction electrode system are both installed in a measured spherical hinge joint. The spherical hinge joint includes a ball socket base, and a ball head installed in the ball socket base. The driving electrode is fixed to the ball head. The induction electrode system includes multiple regular hexagonal spherical electrode plates, and one or more regular pentagonal spherical electrode plates. Five regular hexagonal spherical electrode plates are all arranged around any one regular pentagonal spherical electrode plate, respective regular hexagonal spherical electrode plates and respective regular pentagonal spherical electrode plate are assembled to form a spherical shell structure.

A stadiometer includes a cap portion to be worn on a head of a user; a connecting portion having a first end coupled to the cap portion and a measuring portion coupled to a second end of the connecting portion. The measuring portion includes a plurality of sensors and a measuring rod. The stadiometer also includes a height measuring plate contactable by the plurality of sensors and the measuring rod. The sensors and measuring rod are configured such that measuring rod is horizontal when the height measuring plate is contacted by the plurality of sensors simultaneously. The measuring rod is configured to contact the height measuring plate when the height measuring plate is contacted by the plurality of sensors simultaneously.

A stadiometer includes a cap portion to be worn on a head of a user; a connecting portion having a first end coupled to the cap portion and a measuring portion coupled to a second end of the connecting portion. The measuring portion includes a plurality of sensors and a measuring rod. The stadiometer also includes a height measuring plate contactable by the plurality of sensors and the measuring rod. The sensors and measuring rod are configured such that the measuring rod is horizontal when the height measuring plate is contacted by the plurality of sensors simultaneously. The measuring rod is configured to contact the height measuring plate when the height measuring plate is contacted by the plurality of sensors simultaneously.

Provided are a workpiece holding apparatus capable of detecting lateral displacement of a workpiece (w) in a planar direction, and a method of detecting lateral displacement of a workpiece (w) with use of the workpiece holding apparatus. The workpiece holding apparatus, which is configured to hold the workpiece (w), with an adhesive pad (2) mounted on a support plate, includes: a capacitance measuring device (5) including an electrode pair formed of first and second electrodes (3a, 3b) and arranged at least at a part of a position corresponding to a peripheral edge portion of the workpiece (w), the capacitance measuring device (5) being configured to measure capacitance of the electrode pair; and a comparator circuit (6) configured to compare the measured capacitance with a predetermined reference value, to thereby detect lateral displacement of the workpiece (w) in a planar direction of the support plate (1). Further, the method of detecting lateral displacement of a workpiece (w) includes comparing the capacitance input to the comparator circuit (6) with a predetermined reference value, to thereby detect the lateral displacement of the workpiece (w).

A stadiometer includes a cap portion to be worn on a head of a user; a connecting portion having a first end coupled to the cap portion and a measuring portion coupled to a second end of the connecting portion. The measuring portion includes a plurality of sensors and a measuring rod. The stadiometer also includes a height measuring plate contactable by the plurality of sensors and the measuring rod. The sensors and measuring rod are configured such that the measuring rod is horizontal when the height measuring plate is contacted by the plurality of sensors simultaneously. The measuring rod is configured to contact the height measuring plate when the height measuring plate is contacted by the plurality of sensors simultaneously.

There is provided an automatic measuring apparatus that automates an inexpensive and easy-to-use contact-type measuring device. An automatic measuring apparatus includes a measuring device including a movable element that is displaceable with respect to a fixed element and moves forward and backward to be brought into contact with or away from a workpiece, and a displacement detection part that detects a displacement or position of the movable element, and an automatic operation part that automates the forward/backward movement of the movable element by power. When the movable element is brought into contact with the workpiece, vibration is applied directly or indirectly to at least one of the workpiece and the measuring device in such a manner that contacting surfaces of the workpiece and the measuring device are in close contact with each other by changing a relative position and posture between the workpiece and the measuring device.