/ Precision Measuring Tools / Precision Hand Tools / Squares / Special Squares / 13A * Not actual product image 50109 13A Inch Reading Double Square 50109 Other similar products Starrett 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. 4" with Graduated Blade only Features Specifications Parts Downloads Contact Starrett Features With Graduated Blade Only 4R Graduation - Quick Reading 8ths, 16ths, 32nds, 64ths Specifications Type: Double Square with Hardened Blade Blade Length (in): 4" Graduations: 32nds - 64ths Material: Steel Includes: With Graduated Blade Only Parts Member of Kit Item #DescriptionPart No.QtyInformation 1•STOCK ASSEMBLY01406-11 2••LOCK BOLT COMPLETE #13PT990210 3•••BOLT, LOCK #11-4PT131361 4•••NUT, .231-1824548-01 5•••SPRING, .263X.313X.250X.025 X201085-1/21 6•••WSHR,.205X.380X.020PT077691 7BLADE, SQUAREB4-4R1 Downloads 2D Dimensional Drawing (PDF) .pdf 27.49 kb