B66-99 UNIVERSAL JOINT BRACE. Derlon Patent. Patented in 1892 by Arthur Derlon of Paris and also patented in France, England and Belgium. Designed for drilling in tight and enclosed spaces, with a very high gizmocity rating. This is the less common japanned version with a handle rather than knob on the rear. Japanning mostly intact, knob and grip have light wear, works smoothly. See Lot 637 for a different version. From the collection of Jim and Christa Schoenky. Good+ 120-240