- Cat No. C1/BD 2573, List of changes A 3744, SCREWDRIVERS, Large, M.G., Mk. I – Also for Ordnance Q.F. 3-pr. 2-cwt., Mk. I, mounted in tanks
- Cat No. C1/BD 2574, List of changes A 3312, SCREWDRIVERS, Small, M.G., Mk. I
Sources:
Specific source references can be provided if required.
