Kinex 4001-03-150 Machinist Knife Edge Solid Inspection Square 6"x4" DIN 875/00
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Product Details
Overall size: 6" x 4" x 5/16" thick (150 mm x 100 mm x 8 mm)||Adheres to strict German DIN 875/00 accuracy standards- squareness guaranteed to w/in 4 microns or 0.0001” (that's one ten thousandth of an inch!)||Machined from a solid blank of tool steel (will never go out of square)||Wide enough to stand on its edge on its own||Made by Kinex Measuring