comprising of one in a French polished mahogany case with a loop, brass plaque to the lid reads 'STANDARD INCH COUNTY BOROUGH OF BURNLEY, W & T AVERY Ltd, LONDON', the second in a smaller French polished case with a brass plaque to the lid which reads 'STANDARD INCH COUNTY BOROUGH OF PRESTON, W & T AVERY Ltd, LONDON', the third in a small French polished case with a brass plaque to the lid which reads 'STANDARD INCH LANCASHIRE COUNTY COUNCIL, WIGAN DIV, W & T AVERY Ltd, LONDON', and another in a wooden case but unmarked (x4)