4", 6", 9" & 12" machinist squares. Tolerance on 4" and 6" (.003). Tolerance on 9" & 12" (.006). Some squares are marked with the tolerance number on the square itself.///brand_for_product_detail=Acme,close_out=Yes,companydescription=Acme - Made in India,condition=New,condition_google=new,cost=8.500000,countrymade=Made in India,country_flag=no_selection,featured=0,flag=no_selection,identifier_exists=0,instock=in stock,is_recurring=0,listprice=32.00,madeby=No,manufacture_country=India,product_image_size=Default,product_page_type=Default,sellprice=48.00,shopping_ad_bestseller=No,smart_campaign_bestsellers=Smart Campaign Bestsellers,square_product_image=https://square-production.s3.amazonaws.com/files/ca568b2bf3ae1fbbf7cd963590f5692d9f6dcc5d/original.png,store_price=45.000000,sw_featured=No,sync_update_msg=Modified in Magento by harryepstein on 26/11/2018,url_path=4-pc-machinist-solid-square-set