4" Machinist's Solid Square. Tolerance .003 marked in red marker on square. - 4" Machinist's Solid Square///brand_for_product_detail=Acme,close_out=Yes,companydescription=Acme - Made in India,condition=New,condition_google=new,cost=0.900000,countrymade=Made in India,country_flag=no_selection,featured=0,flag=no_selection,identifier_exists=0,instock=in stock,is_recurring=0,listprice=4.00,madeinusa=0,manufacture_country=India,product_image_size=Default,product_page_type=Default,sellprice=7,smart_campaign_bestsellers=Smart Campaign Bestsellers,square_product_image=https://square-production.s3.amazonaws.com/files/30b060c1a1839ba00fe0ddbbeba3c51039fdfca8/original.jpeg,store_price=7.000000,sw_featured=No,url_path=4-machinist-s-solid-square