: Referring to the angular area of a survey, such as a 0.9 sq. degree mosaic image used in the GMRT ELAIS N1 survey .
: Metal or stone backsplash packs, such as those from MURELLA , commonly use 0.9 sq. ft. as a standard unit size. 0.9,sq
: Specific rules where a replacement feature must remain within 0.9 (90%) of the original square inch size, often seen in historic district window regulations . : Referring to the angular area of a survey, such as a 0