Figure from Stephen Johnston, ‘Making mathematical practice: gentlemen, practitioners and artisans in Elizabethan England’ (Ph.D. Cambridge, 1994). See the contents page for direct access to the chapters and the image gallery for the figures currently available online.
Larger version of figure 5.5.

Figure 5.5

Pett and Baker’s written specification and diagram for the sluice at Dover, 1583; SP12/161/4.i.

Source: by permission of the National Archives

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