Pixel Scale of Observations

I have been using the astroquery.mast functions Observations.query_criteria and Observations.download_products to download HLA FITS files, but I've come to a point where I need to know the degree-to-pixel scale of the observation in order to know if I need to download the files. The pixel scale is available in the HLA querying web browser, but I have not been able to find the parallel functionality in astroquery as the tables downloaded after the calling of either Observations.query_criteria and Observations.download_products do not contain any pixel scale information.

Is there another function I can call to get the pixel scale of an observation or product before downloading any image data?

Start by tracing the astroquery.mast entry points Observations.query_criteria and Observations.download_products, focusing on the metadata available before image files are downloaded. Determine where the HLA pixel scale can be obtained and define completion as exposing that scale to callers before downloading image data.

Written by the indexing model from the issue text.