Abstract: A field can be generated with a first avatar at a first current position and a second current avatar at a second position. The first avatar can be associated with a first computing device. Similarly, the second avatar can be associated with a second computing device. Inputs on the computing devices can be used to adjust the current positions of the avatars. A distance between the avatars can be determined. If the distance between the avatars is less than or equal to a predetermined threshold, a multi-media conference can be initiated including the first and second computing device.

Abstract: A laser level is provided to generate a laser beam. The laser level has a main body and a removable pedestal. The main body includes a housing, at least one laser generator, a power source and a switch. The pedestal and the main body mount to each other by magnetism, and the pedestal has a spherical or similar slippery upper surface, the main body has a base surface with a corresponding matching shape such that the main body and the pedestal can well inosculate to each other. The main body can be swiveled or moved all around on the pedestal, and laser beams of different angles and directions can be formed thereby.

Abstract: A distance measuring device is provided that measures the distance to an object surface. The distance measuring device includes a housing, a measuring signal projecting and detecting means, a laser indicating device, a display, a circuit, a series of battery cells, a switch and plurality of operation buttons. The measuring signal projecting and detecting means emits a signal to an object surface and detects the reflected signal therefrom. The laser indicating device projects at least one laser beam onto a surface to form at least one visible reference line vertical to the direction in which said measuring signal is emitting. And, the circuit calculates the distance between the laser beam and the object surface.