PEC Tools 7105-166 Double Squares; Blade Length (Inch): 6 ; Graduation Style: 16R ; Graduation (mm): 1/100 in; 1/32 in; 1/50 in; 1/64 in ; Graduation (Inch): 1/100 in; 1/32 in; 1/50 in; 1/64 in ; Graduation (Degrees): 1/100 in; 1/32 in; 1/50 in; 1/64