An object in a storage area or moving vehicle is monitored by attaching an electronic tag to the object. An electronic device detects the presence of the object by communicating with the tag while the object is in storage or is being moved by the vehicle. The tags may also determine the location of an attached object and may reroute the object if it deviates from a given shipping schedule. A group of objects is monitored by two electronic tags, each attached to an object in the group. Each tag h...

A measuring sensor, in particular for determining the oxygen content in exhaust gases of internal combustion engines, having a sensor element fixed in gastight fashion in a metal housing (14) and having a sealing flange (60) mounted on the housing (14) and resting on a sealing seat (76) embodied in an exhaust system (11). A union nut (80) is guided over onto the housing (14) and can be screwed into a thread (78) of an opening (70) provided in the exhaust system (11) and presses the sealing flang...

Measuring device comprising a flow meter (26) provided with an inlet and an outlet which are each intended to be connected to a conduit in which a polyphase outflow to be measured flows, originating, for example, from an oil well, and a first valve (28) arranged below the flow meter (26), the flow meter being mounted generally vertically. According to the invention, the device furthermore comprises a branch passage (34), provided with a second valve (36), opening above the flow meter, so that it...

There is provided a method for constructing and assembling an improved measuring instrument in which the frame of the instrument is made by molding a first half of the frame and molding a mating second half of the frame. The frame halves each include working or reference surfaces utilized for measuring, and openings for receiving a vial. First and second cavities are formed in the border of each of the openings for positioning the vial so that it is aligned in a predetermined angular relationshi...

A measuring device which may be employed to afford both linear and non linear dimensional information without limitation as to quantity. The device is contained in a housing of circular cross section, the housing being manually rolled between the start and end points of that which is being measured automatically registering with the use of a ball marker the distance travelled between them. By reversing the direction of roll, subtraction is also automatically performed and registered. The device ...

The electrochemical measuring technique of the present invention employs, as the barrier material, a concentrated electrolyte, which also forms a medium for the controlled dissolution of a surface of the semiconductor so as to provide a continuous depth profile. The depth profile characteristic may be determined by capacitance-voltage measurements on n-type bulk GaAs, using KOH as the electrolyte.

A communications line under test intercouples programmable local units, one of which transmits an analog waveform to the other in response to digital control signals received from a computer. The receiving programmable local unit transmits a digital signal to the computer representative of the received analog signal to thereby enable the computer to determine transmission characteristics of the communications line intercoupling the programmable local units.

An automatic gain control circuit functions to adjust the magnitude of an input signal supplied to a measuring circuit to a level within the dynamic range of the measuring circuit while a log-ratio circuit adjusts the magnitude of the output signal from the measuring circuit to the level of the input signal and optimizes the signal-to-noise ratio performance of the measuring circuit.

A measuring dispenser wherein a generally cylindrical drum having a transverse wall is positioned at the bottom of a canister, and a forwardly extending longitudinally movable partition with a transverse rear wall is inserted within the drum so that variable volume measuring chambers are provided by longitudinally moving the partition within the cylindrical drum. A one-piece cylindrical adjuster is inserted within the drum and is provided with inclined slots for longitudinally adjusting the part...

This invention provides a measuring nail which can be prevented from being pulled out from a roadbed even when pushed down on the roadbed by a motorized grader, a macadam roller, a tired roller, a tire of a dump car carrying a pavement material or a foot of a worker, to provide an improved working efficiency. The measuring nail of this invention comprises a nail body embedded in a roadbed and a rod-like elastic member engageable with a top end of said nail body.