And now for something completely different. From the time when men were men and powerful, variable speed electric drills unavailable - the "Val d'Or" 2-speed No.2 Morse taper drill made by Outillage Val d'Or, Saint-Cloud, France.
Once a common tool for professional tradesmen, these drill were well made and expensive. Today, numbers survive from various makers - and using one to drill though 10 mm of steel plate a jolly good workout.