B67-67 ADJUSTABLE T-BEVEL. St. Johnsbury Tool Co. Fine example of the "diamond bevels" patented by Isaiah Robinson and manufactured in St. Johnsbury, VT. This is the version with the solid steel handle with the rare sliding lock to convert it to a square. 6" blade and 4" handle, very clean. Blade is marked with the St. Johnsbury trademark but not its name or the patent date, which identifies it as early. From the collection of Steve Dice. Fine 400-800