Abstract: The invention is directed to a portable data logging device for logging d concerning room identification and dimensions in a building or facility. The invention includes a microprocessor based portable computer having manual and automated inputs for logging data including a data port for room dimensions. An electronic distance measuring device produces an output indicative of one or more room dimensions in a digital format. An auxiliary processor responsibly coupled to the output of the distance measuring device converts the output to a coded format recognizable by the microprocessor. The data encoded in the coded format is coupled to the microprocessor via a voltage converter for recordation. The microprocessor may be programmed to step through a series of prompts, responses to which are stored in appropriate data locations for use at a later time.

Abstract: A prefabricated vehicle maintenance apparatus is disclosed, including a housing having bottom, side and end walls, which housing is adapted for insertion within a pit formed in the ground. A horizontal platform is arranged in the housing for supporting a mechanic beneath a vehicle arranged in straddling relation above the pit, the platform normally having effective width and length dimensions corresponding generally with the spacing distances between the housing side and end walls, respectively. The vehicle maintenance apparatus further includes a platform lifting device for vertically displacing the horizontal platform between upper and lower levels relative to the housing bottom wall, at least one of the effective width and length dimensions of the horizontal platform being variable to define an opening affording access to the portion of the housing bottom wall arranged beneath the platform.