A shunt valve system includes an implantable shunt valve and a device for obtaining pressure setting information from the shunt valve after it is implanted under the scalp of a patient. The device includes a housing that is externally mountable on the patient's head proximate the shunt valve. A fluid-filled chamber is formed in the housing in which a ferromagnetic indicator is movable. The position of the ferromagnetic indicator corresponds to an indicator magnet located within the implanted shu...

A pointer device having an illuminated pointer made of light-guiding material, mounted rotatably about a pointer axis, having a permanently mounted light source whose light is coupled axially into the illuminated pointer. The illuminated pointer includes a radial section which constitutes a pointer vane, and an axial section which constitutes a light gatherer. Light deflection from the axial section to the radial section takes place via a reflective surface and a first-surface mirror.

An indicator providing visual information of the level of bulk material in a bin has rotatable visual members with bright and dark colored surfaces covered with a transparent lens. A actuator located within the bin is operatively coupled to the visual members to turn the visual member to an ON position exposing the bright colored surface to a person when bulk material engages the actuator and to an OFF position exposing the dark colored surface to a person when the actuator is free of bulk mater...

A sterilization indicator includes a substrate and indicator composition. The indicator composition contains a colorant, such as acid fuchsin, that undergoes a distinct color change if exposed to hydrogen peroxide vapor. The sterilization indicator can be used to monitor a sterilization process involving hydrogen peroxide vapor.

The invention provides a method of monitoring calibration of a spectrophotometric apparatus including one or more calibration algorithms for one or more analytes. This method includes measuring absorbance of a quality control material with the apparatus to obtain a measurement, where the quality control material exhibits an absorbance spectra having a negative slope for a continuous spectral segment from about 5 nm to about 200 nm in length, and where the spectral segment includes a principal ca...

A wind indicator is described that includes a body with a frame including a spindle axis and a web. A pivot is connected to the frame to permit the body to rotate about a pivot axis. A spindle is disposed on the spindle axis and is rotatable about the spindle axis. The spindle includes first and second hubs, each of which include a central body portion and at least one vane support receiving element. The wind indicator also has at least one element connecting the first hub to the second hub to m...

A data indicator is disclosed which comprises a non-volatile memory (26), control circuitry (24) by which data can be read from and written to the memory, a timer (28) and/or an event detector (30), means such as a terminal (20) for connection to an electrical supply of a host apparatus and an interface (32) through which data can be exchanged with the memory (26). In use, the event detector (30) detects when the host apparatus is switched on and in dependence on the detector output the control ...

An electrolyte with an indicator, such as a dye, for detecting leakage from an electrochemical energy storage device is provided. Also provided is a method of making such an electrolyte with indicator; a device that incorporates such an electrolyte with indicator; a method of manufacturing an electronic or electrical system that incorporates such a device; and a method of detecting the leakage of electrolyte from a battery or capacitor.

An angle indicator is provided for measuring an angle of inclination of a structure with respect to a plane, such as a horizontal or vertical plane. The angle indicator includes a housing adapted and configured to be mounted to the structure, an indicator movably disposed in the housing having an angular range of motion about an axis intersecting the plane, and indicia provided on the housing for indicating proper angulation of the structure with respect to the plane. The indicia can be defined ...

A charge indicator for a battery includes a transparent inspection rod comprising an observation area at a first end and a tip formed by a conical reflection area at a second end. The charge indicator also includes a ball cage that includes a gas bubble collection channel beginning between the first upper channel boundary wall of the ball guidance channel and the tip, the gas bubble collection channel extending from the lower area of the ball cage to the tip and extending obliquely toward the to...