A good spanner lasts twenty years. A bad one rounds off the first stuck nut, and often the nut with it. Five checks before you pay.<\/p>\n
Look for Cr-V<\/strong> (chrome vanadium) on spanners and sockets, and S2<\/strong> on screwdriver bits. Very cheap tools are often soft steel with shiny plating.<\/p>\n Good tools are made to a standard and say so: DIN or ISO numbers on spanners and sockets. No mark at all is a warning sign.<\/p>\n A 6-point socket grips the flat sides of a nut, so it rarely slips on a tight or rusty one. 12-point sockets are handy in tight places but slip more easily.<\/p>\n For live electrical work, use screwdrivers and pliers marked 1000 V<\/strong> with the double-triangle symbol (tested to IEC 60900). A plastic handle on its own is not insulation.<\/p>\n Fakes of well-known European brands are common in Iran. A price far below the market is the first sign. Ask who imports the tool and who gives the warranty here: some brands’ “lifetime warranty” only counts in their own country.<\/p>\n Tip: buy the few tools you use every day in good quality, and the rest as you need them. A huge cheap set is mostly tools you never use.<\/p>\n","protected":false},"excerpt":{"rendered":" \u062c\u0646\u0633 \u0641\u0648\u0644\u0627\u062f\u060c \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f\u060c \u0628\u06a9\u0633 \u0634\u0634\u200c\u067e\u0631 \u0648 \u0627\u0628\u0632\u0627\u0631 \u0639\u0627\u06cc\u0642\u060c \u0628\u0647 \u0632\u0628\u0627\u0646 \u0633\u0627\u062f\u0647.<\/p>\n","protected":false},"author":0,"featured_media":125,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-110","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/posts\/110","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/comments?post=110"}],"version-history":[{"count":0,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/posts\/110\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/media\/125"}],"wp:attachment":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/media?parent=110"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/categories?post=110"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/tags?post=110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}2. A standard mark<\/h2>\n
3. 6-point, not 12-point<\/h2>\n
4. Insulated tools for electrical work<\/h2>\n
5. Original, and who gives the warranty<\/h2>\n