Are you acquainted with any particular weighing machine, which obviates the common objection in regard to impositions by the machine-keepers?—I am; Mr. Salmon, of Woburn, many years ago, contrived, and had a patent (which has expired) for a weighing machine, intended to prevent impositions on the carters: the machine being so contrived as to be locked up from the machine-keeper, and accessible only to the surveyor, and so as to exhibit the exact weight by a revolving index, like the hands of a clock, which are called clock-face indexes; a great number of these weighing machines have long been in use in the kingdom, some in the immediate environs of London: by looking at the index of which machine, the carter, or any passer by, may see that the machine, before the carriage is drawn upon its weigh-bridge, is in just balance; and all the time the carriage remains upon the weigh-bridge, the index exhibits the weight, so that the carter can take it down; and at the same time the dial-plate is made an abstract of the law, by there being written against each of the weights fixed, the breadth of the carriage wheel, and the season to which that weight is applicable at the commencement of penalties for over-weights. Can you inform the Committee of the expense of a machine of this description?—I cannot; but it is trifling, compared with its advantages, and an index may be added to a machine upon the common principle, using weights, placed in a scale; they may be applied to any good machine already in use.