Made by a tool maker and has no manufacturer marks.
Used
REF: r1s3
Machinist Sine Plate Rectangle 6 x 3" Adjustable Angle Bar Toolmaker Machinist
$194.99
Brand
Unknown
Length
6 in
Country/Region of Manufacture
United States
Width
3 in
condition
Used
Machinist Sine Plate Rectangle 6 x 3" Adjustable Angle Bar Toolmaker Machinist