Final Answer:
The brick with nominal dimensions of 6 x 2 2/3 x in(102 x 68 x 305mm) is known as the SCA Brick.
Step-by-step explanation:
The dimensions of the brick given in both inches and millimeters help identify its classification. To determine the correct designation, converting the measurements into a unified system is necessary. First, convert the inches to millimeters to compare them consistently. With 1 inch equaling 25.4 millimeters, the dimensions of 6 x 2 2/3 x in become 152.4 x 68 x 305mm, confirming the measurements.
Now, considering the traditional brick sizes, the dimensions of this brick align with those of an SCA Brick, which typically measures 152 x 76 x 305mm. Comparing these dimensions showcases a close match, with the given measurements closely resembling the SCA Brick specifications. The slight variation in width (2/3 inch or 17mm) might account for manufacturing differences or regional standards but still falls within the range of an SCA Brick's dimensions.
The SCA Brick's sizing is widely recognized, primarily used in construction and adhering to specific standards for consistency and compatibility in building projects. Despite minor discrepancies, the given dimensions correspond most closely to the specifications of an SCA Brick, leading to the conclusion that it is indeed an SCA Brick based on its measurements and industry standards.