Starrett 13D Inch Reading Double Square Blade MADE IN USA Fly cutters American Sun USA Made CT50

American Sun USA Made CT50 Cat50 Taper ER50 collet chuck End Mill Holder

9688 in Drill - Decimal Inch

padded carrying case

May be marked either Germany or W-Germany depending on the date of manufacture

small grooves

Starrett 13D Inch Reading Double Square Blade MADE IN USA Fly cutters American Sun USA Made CT50Starrett 13 squares are very popular with machinists, toolmakers, and patternmakers. The sliding blades are adjustable making it practical for a wide variety of uses. The faces of the head are ground square. Drill Grinding Blade only (for 6" 150 mm Squares) square. FEATURES Drill Grinding Blade Only (for 6" 150mm 13 Squares) Beveled to 59 Deg for drill grinding on one end and 41 Deg (the cutting angle of countersinks for machine screws) at the other