Disclosed is a precision-positioning drive end pre-tightening device, which comprises a positioning platform (6), an actuator (14), a capacitive sensor (4), a capacitive sensor bracket (3), a pre-tightening block (12) and a film force sensor (13), wherein a sliding groove is provided in the middle of the positioning platform (6), and said pre-tightening block (12), said film force sensor (13) and said actuator (14) are provided in the sliding groove in sequence; the capacitive sensor bracket (3) is fixed on the positioning platform (6), and three connecting rods (3-1) which are connected in sequence via compliant hinges are axially provided at one end of the bracket body of the capacitive sensor bracket (3); an end surface of the capacitive sensor (4) and an upper side surface of the pre-tightening block (12) are parallel to each other, and a gap exists therebetween; and a two-stage pre-tightening device for pre-tightening the pre-tightening block (12) are also provided on the positioning platform (6). The technical means of the device is simple and easy, and the device can satisfy the requirements in related fields of precision positioning, precision and ultra-precision machining, precision operating, precision measurement, micro-electro-mechanical system, etc. for the precision-locating drive end pre-tightening device.

Disclosed is a precision-positioning drive end pre-tightening device, which comprises a positioning platform (6), an actuator (14), a capacitive sensor (4), a capacitive sensor bracket (3), a pre-tightening block (12) and a film force sensor (13), wherein a sliding groove is provided in the middle of the positioning platform (6), and said pre-tightening block (12), said film force sensor (13) and said actuator (14) are provided in the sliding groove in sequence; the capacitive sensor bracket (3) is fixed on the positioning platform (6), and three connecting rods (3-1) which are connected in sequence via compliant hinges are axially provided at one end of the bracket body of the capacitive sensor bracket (3); an end surface of the capacitive sensor (4) and an upper side surface of the pre-tightening block (12) are parallel to each other, and a gap exists therebetween; and a two-stage pre-tightening device for pre-tightening the pre-tightening block (12) are also provided on the positioning platform (6). The technical means of the device is simple and easy, and the device can satisfy the requirements in related fields of precision positioning, precision and ultra-precision machining, precision operating, precision measurement, micro-electro-mechanical system, etc. for the precision-locating drive end pre-tightening device.

Scale identifier systems and methods for generating a log of scale type and location in subterranean formations, and, more particularly, in wellbore tubing are provided. A method for scale identification may be provided. The method may comprise providing a first logging tool comprising a tool body, a neutron source coupled to the tool body, and detectors coupled to the tool body; providing a second logging tool for measuring deviations in inner diameter of a tubing in a wellbore; placing the first logging tool and the second logging tool into the wellbore; logging the interior of the tubing with the first logging tool and the second logging tool to generate data; and generating a log of scale location and type from the data.

Scale identifier systems and methods for generating a log of scale type and location in subterranean formations, and, more particularly, in wellbore tubing are provided. A method for scale identification may be provided. The method may comprise providing a first logging tool comprising a tool body, a neutron source coupled to the tool body, and detectors coupled to the tool body; providing a second logging tool for measuring deviations in inner diameter of a tubing in a wellbore; placing the first logging tool and the second logging tool into the wellbore; logging the interior of the tubing with the first logging tool and the second logging tool to generate data; and generating a log of scale location and type from the data.

A measuring device for measuring nuts, bolt heads, washers and the like that includes a body having a first end, an opposing second end, and a longitudinal reference line extending between the first end and the second end; a first pair of parallel surfaces of equal length, the first pair of opposing parallel surfaces longitudinally between the first end and the second end, the surfaces of the first pair spaced apart by a first distance; a second pair of parallel surfaces of equal length, the second pair of parallel surfaces longitudinally between the first pair of parallel surfaces and the first end, the surfaces of the second pair spaced apart by a second distance that is smaller than the first distance; and a pair of nonparallel surfaces connected at an obtuse angle, the opposing nonparallel surfaces longitudinally between the second pair of opposing parallel surfaces and the first end.

A measuring device for measuring nuts, bolt heads, washers and the like that includes a body having a first end, an opposing second end, and a longitudinal reference line extending between the first end and the second end; a first pair of parallel surfaces of equal length, the first pair of opposing parallel surfaces longitudinally between the first end and the second end, the surfaces of the first pair spaced apart by a first distance; a second pair of parallel surfaces of equal length, the second pair of parallel surfaces longitudinally between the first pair of parallel surfaces and the first end, the surfaces of the second pair spaced apart by a second distance that is smaller than the first distance; and a pair of nonparallel surfaces connected at an obtuse angle, the opposing nonparallel surfaces longitudinally between the second pair of opposing parallel surfaces and the first end.

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.

A measuring device includes a housing and a caliper positioned inside the housing. The housing has a proximal end and a distal end and defines an axis from the proximal end to the distal end. The caliper includes a first measurement probe extending out of the housing in a first direction, a second measurement probe adjustably coupled to the first measurement probe, the second measurement probe extending out of the housing in a second direction that is substantially opposite of the first direction, and measurement circuitry configured for transmitting a measurement signal based on the relative positions of the first and second measurement probes.

A measuring device includes a housing and a caliper positioned inside the housing. The housing has a proximal end and a distal end and defines an axis from the proximal end to the distal end. The caliper includes a first measurement probe extending out of the housing in a first direction, a second measurement probe adjustably coupled to the first measurement probe, the second measurement probe extending out of the housing in a second direction that is substantially opposite of the first direction, and measurement circuitry configured for transmitting a measurement signal based on the relative positions of the first and second measurement probes.

An oriented distance measuring system can include a rail; an odometer including a wheel; a first controller; and a first sensor in communication with the first controller, the first sensor configured to sense rotation of the wheel, the first controller configured to collect data from the first sensor, the data being associated with the rotation of the wheel; and a second sensor configured to sense roll, pitch, and yaw of the system.