| Level | Item |
| Ref No | L/E/33/53 |
| Alt Ref No | E(L)/33/53 |
| Title | Industrial Rhythm \ Measurement of Effort and Effort Elements, The |
| Date | n.d. |
| Extent | 6 sheets |
| Description | Copy of typed notes with diagrams. |
| Language | English |
| Physical Description | Pages numbered 277-282. See also L/E/53/51. One duplicate removed from L/E/76/18-19, original reference IR/M/1a. |
| Format | Papers |