Vertical movements of axes ordered by left barrel for multiplication compiled in part from a genealogical notation. Sheet 3 of 3.
List of verticals on one barrel for division (Notation 290) with the equivalent verticals on five barrels to order the same work.
Untitled. [List of the combinations in division performed as in Notation 290, with the cycles in which they occur] Sheet 4 of 4.
Works photographic negative of stranding and armour departments, WT Glover & Co. Ltd works, Trafford Park