Vade mecum, or The necessary companion Containing, 1. Sir S. Morland's Perpetual almanack, in copper plates, with many useful tables proper thereto. 2. Christian and regal years compar'd from the Norman conquest. 3. The reduction of weights, measures. 4. The ready casting up any number of farthings, half-pence, pence, shillings, nobles, marks, and guinneys. 5. The interest, and rebate of money, the forebearance, discompt, and purchase of annuities. 6. The rates of post-letters, both inland and outland, with the post-stages. 7. The usual and authorized rates or fares for coach-men, carr-men, and water-men.