B65-75 ADJUSTABLE TRY SQUARE. Houle Patent. Rare example of the square patented by Frank Houle of Chicago in 1894. The blade can be rotated and locked at different angles. Early version marked "Pat. Applied For." Tulipwood handle has a couple of small scratches and has been stamped by Jock Moody; blade is pristine. From the collection of Steve Dice. Fine 100-200