- costing or valued at fourpence
- Carpentry designating a size of nail
The definition of fourpenny designates the size of a nail.
A nail size such as 1 3/8 inches for a fine nail or 1 1/2 inches for a standard nail are examples of fourpenny nails.
- The process is the same as that of finding the sum or differ I ence of 3 sixpences and 5 fourpences; we cannot subtract 3 sixpenny-bits from 5 fourpenny-bits, but we can express each as an equivalent number of Ones.