Abstract: Aspects of the present invention are directed to efficiently and accurately inputting data into a computer using a digital protractor. In accordance with one embodiment, a method is provided for inputting data into an application program installed on the computer when an event is generated using the digital protractor. More specifically, the method includes identifying a control on the digital protractor that was activated to generate the event. When the identity of the control is known, the event data is processed into a format that is accepted by an application program. Then, the method causes the processed data to be stored in a location on the computer that is accessible to the application program.

Abstract: A fluid flow measurement assembly is shown and described. In a preferred embodiment, a flow conditioning section comprised of straightening vanes and a diffuser, as well as temperature probes, pressure transducers, and a metering assembly, are all provided in an integral housing. The assembly is provided with different sized flanges on an inlet orifice and an exit orifice, such that the assembly may be installed in a fluid line in only one direction, thereby preventing incorrect installation.The flow conditioning section is comprised of a diffuser and straightening vanes, and serves to ensure that fluid flowing through the measurement assembly is uniformly scrambled and then normalized, such that the metering assembly will be substantially insensitive to upstream flow disturbances and will provide accurate and repeatable fluid flow measurements.The metering assembly is comprised of two counter-rotating turbines, a pickoff device or pulse detector being provided for each turbine.