The eyeglass frame is an improved eyeglass frame with dislocating joints. The retainer has an attachment base operable for being connected to a rib of the vehicle part. The electronically-controlled bar code symbol reading engine is induced into its high-speedhigh-resolution raster scanning mode of operation when the hand-supportable bar code symbol reading device is removed from its support stand, and into its high-speedlow-resolution raster scanning mode when the hand-supportable bar code symbol reading device is placed into its support stand. As a result, the flip-chip mounted first IC die is stacked with the second IC die in a simple, novel manner. These compounds possess useful plant protecting properties and may advantageously be employed in agricultural practice for controlling or preventing the infestation of plants by phytopathogenic microorganisms, especially fungi.