Gilbert_Blockmaking_1965_Figure_4_Page011.jpg

Summary

Description	English: A double-block in the rigging of HMS Victory. Figure 4 from: (1965) [The Portsmouth Blockmaking Machinery (1965) The Portsmouth Block-making Machinery: A Pioneering Enterprise in Mass Production] , H.M. Stationery Office
Date	31 December 1965
Source	https://archive.org/details/portsmputh-blockmaking-machinery
Author	Gilbert, K.R. (Keith Reginald) 1915-1973

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