This is a COPY of the ORIGINAL.

Adjusters Manual for Singer Machines 15-86 and 15-87 - 32 pages plus Parts list and diagram for Machines 15-86, 15-87, 15-96 and 15-97

Our manuals are printed copies, sized 8 1/2 × 11 inches and bound with a clear plastic front cover, a plastic comb spine so that they can lie flat when opened, and a cardstock back cover. 
Most are enlarged from the originals.