Casgliadau Arlein

Handwritten in pencil on off-white, blue lined paper. Two pages from a notebook, with writing on the front and back sides. The notes are entitled 'Turbo Compressors / Heat Balance Sheet', and the document is dated 3-12-20. Contained loose within a maroon hardback file with all other documents under accession number 85.184I/4. Documents 85.184I/4 (74) - 85.184I/4 (78) are held together with a paperclip.