A length measuring jig measures the length of a tubular stud bolt with a central hole defined axially therethrough while the tubular stud bolt remains mounted on a target product such as a steam turbine casing. The length measuring jig includes a rod to be inserted into the central hole in the stud bolt, a first jaw provided on a tip end of the rod for abutting against an end face of the one side in longitudinal direction of the stud bolt, a slider on which the rod is slidably supported, a second jaw provided on the slider for abutting against an end face of the other side in longitudinal direction of the stud bolt, and a cap to be fitted in the central hole in the stud bolt and having a slit defined therein for allowing the rod to extend therethrough. The first jaw has an overall length smaller than a diameter of a minimum-diameter portion of the central hole in the stud bolt. The cap has an inner wall surface defining an end of the slit in the cap, and a distance to the inner wall surface from a central axis of the stud bolt is equal to a radius of the minimum-diameter portion of the central hole in a state in which the cap is fitted in the central hole in the stud bolt.

This multifunctional morphological measuring apparatus comprising a housing (104) having a slot, and a graduated flexible tape measure (6) inserted into said slot and having a first end held in the housing (104) and a second end (105) disposed at the exterior of the housing (104), the housing (104) enclosing means for winding the tape (6) in said housing (104) and an electronic control system (7) comprising an electronic card (15) having a computer and electronic memory components, the apparatus (100) further comprising means for measuring (12) a morphological index characteristic of a part of the human body (U0) around which the tape is at least partially wound (6).

The present invention provides an apparatus for measurement of a limb circumference, comprising a pull string module, a first measurement module and a second measurement module. The pull string module comprises a surrounding component, wherein the surrounding component comprises an encircling part disposed around a limb of an individual; the first measurement module is disposed at the pull string module and moves alone the longitudinal axis of the limb and meanwhile measures the length of the limb; and the second measurement module measures the length of the encircling part simultaneously when the first measurement module move alone the limb, so as to determine the correlation between the limb length and the limb circumference. The present invention further provides a device including two or more apparatuses of the present invention to measure the limb compliance and to be used in the treatment of lymphedema.

An orthopedic guide that can comprise a base, a first attachment and a second attachment is disclosed. The base can have a plurality of connection features spaced from one another along a longitudinal extent. The base can be configured to seat on a rim of a bone. The first attachment can be selectively coupled to the base at a first end portion thereof and can be selectively coupled to the base at a second end portion thereof. The first attachment can be arch shaped when coupled to the base. The first attachment can define a first plurality of apertures. The second attachment can be selectively coupled to the base at a first end portion thereof and can be selectively coupled to the base at a second end portion thereof. The second attachment can be arch shaped when coupled to the base. The first attachment can define a second plurality of apertures.

A measuring tape for measuring the size of limbs or waists is provided with a tape head capable of being stably inserted into a positioning hole during measurement and being automatically ejected out of the positioning hole after measurement, and includes a shell, and a cavity formed in the shell and used for receiving a flexible rule. An elastic switch assembly for clamping the tape head in the positioning hole is disposed at a position, close to the positioning hole, in the cavity. The elastic switch assembly and a leaf spring are disposed in the positioning hole, allowing the tape head to be inserted thereinto, in the shell, such that the tape head can be stably disposed in the positioning hole after being inserted into the positioning hole, and will not slide out of the positioning hole when users observe measure data.

A measurement device for measuring the circumference of a human head. The measurement device includes a generally circumferential body that fits around a human head. The generally circumferential body has a receiver segment with an elongated geometry. The receiver segment includes an adjustment end receiver. The receiver segment is flexible. The generally circumferential body also has an adjustment segment with a measurement end. The adjustment segment measurement end has a diameter that is narrower than the receiver segment adjustment end receiver diameter. The adjustment segment has a measurement indicator that extends from the measurement end. The adjustment segment is flexible. The adjustment segment measurement end is adjustably inserted into the receiver segment sliding end receiver. The visual measurement indicator is operable with respect to the receiver segment adjustment end receiver.

An optical readout device for providing visual circumference and diameter readings of an object being measured by a linear tape. The tail end of the tape passes by a reader element in a digital device which is equipped electronically with the pi conversion factor to provide selective readings of diameter in English and metric units, as well as circumference readings. The device can be employed for external (outside) and internal (inside) measurements.

Described herein is a magnetic dendrometer having a frame, a spring-tension mechanism, and a magnet for moving together with the spring-tension mechanism. A magnetic sensor is attached to the frame. The magnetic sensor senses the linear motion of the magnet. This linear motion translates to trackable fluctuations in magnetic field. The magnetic fluctuations are converted to electrical signals by the magnetic sensor. A spring is attached to a free-floating wishbone-style component. The free-floating wishbone-style component is coupled to a slider which has an adjustable, single-contact point with a target (e.g., a vine, a branch, etc.). The frame is a stationary frame that carries the magnetic sensor. The frame connected via the spring to the wishbone/slider combination cooperates with each other for providing linear motion to extend or contract the spring in length directions. The length variations of the dendrometer spring are converted to linear motion of the magnet and then into electronic signals.

Generally, a device to measure the circumference of circular objects. Specifically, a device including a pair of slidingly engaged members disposed between a pair of arms configured to be engaged with tread on a tire at about the midline of a wheel, an electrical circuit which varies in output voltage based on the distance between the pair of arms, and a processor communicatively coupled to a non-transitory computer readable medium containing a program which correlates the output voltage of the electrical circuit to a unit measure of distance between the pair of arms and calculates tire circumference.

A length measuring jig measures the length of a tubular stud bolt with a central hole defined axially therethrough while the tubular stud bolt remains mounted on a target product such as a steam turbine casing. The length measuring jig includes a rod to be inserted into the central hole in the stud bolt, a first jaw provided on a tip end of the rod for abutting against an end face of the one side in longitudinal direction of the stud bolt, a slider on which the rod is slidably supported, a second jaw provided on the slider for abutting against an end face of the other side in longitudinal direction of the stud bolt, and a cap to be fitted in the central hole in the stud bolt and having a slit defined therein for allowing the rod to extend therethrough. The first jaw has an overall length smaller than a diameter of a minimum-diameter portion of the central hole in the stud bolt. The cap has an inner wall surface defining an end of the slit in the cap, and a distance to the inner wall surface from a central axis of the stud bolt is equal to a radius of the minimum-diameter portion of the central hole in a state in which the cap is fitted in the central hole in the stud bolt.