Note 46 — Chapter VII
Reading edition
The specialistic and detailed care necessary for practical and exact time-study may be indicated by the reproduction below of a method of record used by Mr. Sanford E. Thompson in timing wheelbarrow excavations. (Explanation. The letters a, b, c, etc., indicate elementary units of the operation: "Filling barrow" = (a); "starting" = (b); "wheeling full" = (c), etc.)