The complexity of medieval & modern pre-metric weights & measures (W&M, ) in Britain presents an obstacle to scholarly research on Western European econ. history. The problem is: the approx. dimensions of many non-standardized measuring units, used by both the Crown & the regional & local markets, varied from time to time & from place to place, & the dimensions even of standard W&M, used in any period are poorly understood. This book will clarify the confusion & bring a new focus to the field of metrology & a new understanding of the units. It includes: tables for rapid identification of all ruling English, Scottish, Irish, or Welsh sovereigns, current English Imperial, Amer. Customary, & metric units, & the basic equiv. for these W&M, & A Dict. of Brit. W&M.,