Implied scale, about 6 ft to 1 inch.
This study shows the east half of the library bay, but on the south side. A slight difference is the absence of a masonry course in the plinth to the right of the aedicule, presumable because the plinth does not step back in this section. Hawksmoor's hand is apparent in the impressionistic pen shading around the flowers in the capital abacuses.
You are all set!
Your first Culture Weekly will arrive this week.