Yacine is correct. Typical drawing standards --- especially military standards --- generally dictate a common size for text and individual schematic objects, primarily for clarity and legibility. If an A-size sheet is not large enough to place all of the elements, you don't reduce the size of the elements, you use a larger (i.e., B-, C-, -D, or -E) -size sheet.
For instance, I use an E-size (34" x 44") sheet for all of my schematics, with 18pt font and 10mm spacing between connector points on objects. If I need a printed copy for reference, I can print this out --- as a PDF or hardcopy --- on a B-size (11" x 17") sheet and it meets my minimum size requirements.
But, as Yacine says, while it seems strange, maybe you've got a different system or strategy in place.