(see Encycl.), is the name given by Mr Lewin Thugwell to an instrument, which is ra- ther an improved perambulator than the instrument which we have noticed by the name of Pedometer. The chief improvement made by him on the perambulator (see that article, Encycl.) is in the size of the wheel, of which the circumference measures 16½ feet, or one pole, adapted to Gunter's concise method of arithmetic, and divided into 25 equal parts, corresponding to the links of his chain for land measuring. There is like- wise a contrivance in Mr Thugwell's pedometer, for compelling the attention of the traveler to the instru- ment at the end of every mile. It is very ingenious, and abundantly simple; but we hardly think it of suffi- cient cient importance to fill the space which a complete description of it would occupy in this Work. It is fully described in the Letters and Papers of the Bath and Well of England Society, for the Encouragement of Agriculture; and likewise in the 6th volume of the Repertory of Arts and Manufactures.