{"title":"Air Plug Gages (Air Probes)","description":"\u003ch2\u003eWhich style?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eStyle\u003c\/th\u003e\n\u003cth\u003eJets\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003cth\u003eWear life\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/air-probe-thru-hole-apt\"\u003eThru-hole (APT)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSet back from the nose\u003c\/td\u003e\n\u003ctd\u003eThrough bores\u003c\/td\u003e\n\u003ctd\u003eLongest\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/air-probe-blind-apb\"\u003eBlind (APB)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eClose to the nose\u003c\/td\u003e\n\u003ctd\u003eMeasuring near the bottom of a blind bore\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/air-probe-super-blind-aps\"\u003eSuper-blind (APS)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAs close to the nose as possible\u003c\/td\u003e\n\u003ctd\u003eThe deepest reach in a blind bore\u003c\/td\u003e\n\u003ctd\u003eShortest\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eSmall plugs can have a factory extension to reach deep bores, and plugs over 2.510″ come with a heavy-duty handle. Miniature plugs, slot-jet plugs for narrow lands, and multi-diameter plugs are quoted from your print.\u003c\/p\u003e\n\u003ch2\u003eClearance class (Dual Master)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass 1, close:\u003c\/strong\u003e highest accuracy, for select-fitting valve spools and sleeves with finish tolerances under .00016″ (4 µm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass 2, standard:\u003c\/strong\u003e right for most jobs, and what we supply unless you specify otherwise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass 3, extra:\u003c\/strong\u003e more gaging range for grinding and honing, when you need a reading before the part reaches size\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eChoosing the right plug\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe reading is taken at the jet, so check where the jets fall relative to grooves, cross holes and chamfers.\u003c\/li\u003e\n\u003cli\u003eThe land being measured must cover the whole jet. A land about twice the jet diameter is a practical minimum.\u003c\/li\u003e\n\u003cli\u003eA plug can't measure closer to the bottom of a blind bore than the leading edge of its jet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDual Master or Single Master?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDual Master\u003c\/strong\u003e tooling is set with two masters, one at each end of the tolerance, and works with any two-master readout. \u003cstrong\u003eSingle Master\u003c\/strong\u003e tooling is set on one master at nominal and is matched to a single-master readout, such as the \u003ca href=\"\/pages\/dimensionair-replacement\"\u003eAir Gage Pro M5-L or M5-H\u003c\/a\u003e that replaces Dimensionair readouts. \u003ca href=\"\/blogs\/air-gaging\/single-vs-dual-master-air-gaging\"\u003eCompare single and dual master\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eQuestions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eIs an air plug the same as an air probe or air spindle?\u003c\/summary\u003e\u003cp\u003eYes. They are three names for the same tool: a gaging body with opposed jets that measures bore diameter with air.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat do I need to get a price?\u003c\/summary\u003e\u003cp\u003eThe bore size and tolerance, whether it is through or blind, and whether you want Dual Master or Single Master tooling. Enter them in the online configurator and you'll see the part number and price.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill your plugs work with my readout?\u003c\/summary\u003e\u003cp\u003eDual Master plugs work with any two-master air readout. Single Master plugs must match the readout's amplification; tell us the make and model and we'll match it.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat else do I need?\u003c\/summary\u003e\u003cp\u003eMasters to set the gage (a ring master, or two for Dual Master), and a handle and hose assembly with the right fitting for your readout.\u003c\/p\u003e\u003c\/details\u003e","products":[{"product_id":"air-probe-thru-hole-apt","title":"Thru-Hole Air Plug Gage (APT)","description":"\u003cp\u003eThe thru-hole air plug (APT) is the everyday bore gage. Its jets sit back from the nose, so the nose guides the plug into the bore and takes the wear. That makes it the longest-lasting style. Use it whenever the bore goes all the way through.\u003c\/p\u003e\n\u003ch2\u003eWhere the jets sit\u003c\/h2\u003e\n\u003cp\u003eDimension A (nose to jet centerline) runs from about .190″ on the smallest plugs to just over 1″ on the largest. If you need to measure close to the bottom of a blind bore, choose the \u003ca href=\"\/products\/air-probe-blind-apb\"\u003eblind (APB)\u003c\/a\u003e or \u003ca href=\"\/products\/air-probe-super-blind-aps\"\u003esuper-blind (APS)\u003c\/a\u003e style.\u003c\/p\u003e\n\u003ch2\u003eDual Master or Single Master\u003c\/h2\u003e\n\u003cp\u003eChoose \u003cstrong\u003eDual Master\u003c\/strong\u003e tooling to set the gage with a minimum and maximum master and work with any two-master readout. Choose \u003cstrong\u003eSingle Master\u003c\/strong\u003e tooling to set on one master at nominal with a matched single-master readout such as the \u003ca href=\"\/pages\/dimensionair-replacement\"\u003eAir Gage Pro M5-L or M5-H\u003c\/a\u003e. Not sure? Read \u003ca href=\"\/blogs\/air-gaging\/single-vs-dual-master-air-gaging\"\u003esingle vs. dual master air gaging\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eHow to order\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eDual Master\u003c\/th\u003e\n\u003cth\u003eSingle Master\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eStyle – jet code + clearance class – material – min\/max bore\u003c\/td\u003e\n\u003ctd\u003eStyle – spec code – material – nominal master size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJet codes\u003c\/td\u003e\n\u003ctd\u003e1, 4 (large jet, above .323″) or 5\u003c\/td\u003e\n\u003ctd\u003e6, 7 or 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody size\u003c\/td\u003e\n\u003ctd\u003eMinimum bore − clearance\u003c\/td\u003e\n\u003ctd\u003eNominal master size − clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMasters needed\u003c\/td\u003e\n\u003ctd\u003eTwo: minimum and maximum\u003c\/td\u003e\n\u003ctd\u003eOne, at nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eMaterial: \u003cstrong\u003eC\u003c\/strong\u003e chrome-plated or \u003cstrong\u003eS\u003c\/strong\u003e hardened steel. Every probe has recessed jets, so body wear doesn't shift the reading, and an air relief groove along the gaging body so blind bores don't build up back-pressure.\u003c\/p\u003e\n\u003ch2\u003eWhat we need to quote\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBore size and tolerance\u003c\/li\u003e\n\u003cli\u003eBore depth, and whether it is through or blind\u003c\/li\u003e\n\u003cli\u003eGrooves, cross holes or chamfers near the measuring point\u003c\/li\u003e\n\u003cli\u003eYour readout make and model, or single vs. dual master\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHandles, hose assemblies, extensions and readout fittings are on the \u003ca href=\"\/collections\/air-gage-accessories\"\u003eaccessories page\u003c\/a\u003e. Full dimensions are in the \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/Air_Gaging_LLC_Air_Tooling_Catalog.pdf\"\u003eair tooling catalog (PDF)\u003c\/a\u003e.\u003c\/p\u003e","brand":"Air Gaging LLC","offers":[{"title":"Default Title","offer_id":50543237693695,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/air-plug-gage-thru-hole-apt.jpg?v=1790459495"},{"product_id":"air-probe-blind-apb","title":"Blind-Hole Air Plug Gage (APB)","description":"\u003cp\u003eThe blind-hole air plug (APB) puts the jets close to the nose so you can measure near the bottom of a blind bore. It is the usual choice for blind holes, with better wear life than the super-blind style.\u003c\/p\u003e\n\u003ch2\u003eWhere the jets sit\u003c\/h2\u003e\n\u003cp\u003eDimension A (nose to jet centerline) runs from about .080″ on the smallest plugs to .125″ on the largest. A plug can't measure closer to the bottom than the leading edge of its jet; if you need to get closer still, see the \u003ca href=\"\/products\/air-probe-super-blind-aps\"\u003esuper-blind (APS)\u003c\/a\u003e style. For through bores, the \u003ca href=\"\/products\/air-probe-thru-hole-apt\"\u003ethru-hole (APT)\u003c\/a\u003e style lasts longer.\u003c\/p\u003e\n\u003ch2\u003eDual Master or Single Master\u003c\/h2\u003e\n\u003cp\u003eChoose \u003cstrong\u003eDual Master\u003c\/strong\u003e tooling to set the gage with a minimum and maximum master and work with any two-master readout. Choose \u003cstrong\u003eSingle Master\u003c\/strong\u003e tooling to set on one master at nominal with a matched single-master readout such as the \u003ca href=\"\/pages\/dimensionair-replacement\"\u003eAir Gage Pro M5-L or M5-H\u003c\/a\u003e. Not sure? Read \u003ca href=\"\/blogs\/air-gaging\/single-vs-dual-master-air-gaging\"\u003esingle vs. dual master air gaging\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eHow to order\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eDual Master\u003c\/th\u003e\n\u003cth\u003eSingle Master\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eStyle – jet code + clearance class – material – min\/max bore\u003c\/td\u003e\n\u003ctd\u003eStyle – spec code – material – nominal master size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJet codes\u003c\/td\u003e\n\u003ctd\u003e1, 4 (large jet, above .323″) or 5\u003c\/td\u003e\n\u003ctd\u003e6, 7 or 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody size\u003c\/td\u003e\n\u003ctd\u003eMinimum bore − clearance\u003c\/td\u003e\n\u003ctd\u003eNominal master size − clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMasters needed\u003c\/td\u003e\n\u003ctd\u003eTwo: minimum and maximum\u003c\/td\u003e\n\u003ctd\u003eOne, at nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eMaterial: \u003cstrong\u003eC\u003c\/strong\u003e chrome-plated or \u003cstrong\u003eS\u003c\/strong\u003e hardened steel. Every probe has recessed jets, so body wear doesn't shift the reading, and an air relief groove along the gaging body so blind bores don't build up back-pressure.\u003c\/p\u003e\n\u003ch2\u003eWhat we need to quote\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBore size and tolerance\u003c\/li\u003e\n\u003cli\u003eBore depth, and whether it is through or blind\u003c\/li\u003e\n\u003cli\u003eGrooves, cross holes or chamfers near the measuring point\u003c\/li\u003e\n\u003cli\u003eYour readout make and model, or single vs. dual master\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHandles, hose assemblies, extensions and readout fittings are on the \u003ca href=\"\/collections\/air-gage-accessories\"\u003eaccessories page\u003c\/a\u003e. Full dimensions are in the \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/Air_Gaging_LLC_Air_Tooling_Catalog.pdf\"\u003eair tooling catalog (PDF)\u003c\/a\u003e.\u003c\/p\u003e","brand":"Air Gaging LLC","offers":[{"title":"Default Title","offer_id":50543241167103,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/air-plug-gage-blind-apb.jpg?v=1790459495"},{"product_id":"air-probe-super-blind-aps","title":"Super-Blind Air Plug Gage (APS)","description":"\u003cp\u003eThe super-blind air plug (APS) places the jets as close to the nose as possible, for the deepest reach into a blind bore. The trade-off is wear: with so little nose ahead of the jet, it wears faster than the other styles. Use it only when the part needs it.\u003c\/p\u003e\n\u003ch2\u003eWhere the jets sit\u003c\/h2\u003e\n\u003cp\u003eDimension A (nose to jet centerline) runs from about .050″ on the smallest plugs to .105″ on the largest. If your part allows a little more room, the \u003ca href=\"\/products\/air-probe-blind-apb\"\u003eblind (APB)\u003c\/a\u003e style will last longer.\u003c\/p\u003e\n\u003ch2\u003eDual Master or Single Master\u003c\/h2\u003e\n\u003cp\u003eChoose \u003cstrong\u003eDual Master\u003c\/strong\u003e tooling to set the gage with a minimum and maximum master and work with any two-master readout. Choose \u003cstrong\u003eSingle Master\u003c\/strong\u003e tooling to set on one master at nominal with a matched single-master readout such as the \u003ca href=\"\/pages\/dimensionair-replacement\"\u003eAir Gage Pro M5-L or M5-H\u003c\/a\u003e. Not sure? Read \u003ca href=\"\/blogs\/air-gaging\/single-vs-dual-master-air-gaging\"\u003esingle vs. dual master air gaging\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eHow to order\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eDual Master\u003c\/th\u003e\n\u003cth\u003eSingle Master\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eStyle – jet code + clearance class – material – min\/max bore\u003c\/td\u003e\n\u003ctd\u003eStyle – spec code – material – nominal master size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJet codes\u003c\/td\u003e\n\u003ctd\u003e1, 4 (large jet, above .323″) or 5\u003c\/td\u003e\n\u003ctd\u003e6, 7 or 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody size\u003c\/td\u003e\n\u003ctd\u003eMinimum bore − clearance\u003c\/td\u003e\n\u003ctd\u003eNominal master size − clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMasters needed\u003c\/td\u003e\n\u003ctd\u003eTwo: minimum and maximum\u003c\/td\u003e\n\u003ctd\u003eOne, at nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eMaterial: \u003cstrong\u003eC\u003c\/strong\u003e chrome-plated or \u003cstrong\u003eS\u003c\/strong\u003e hardened steel. Every probe has recessed jets, so body wear doesn't shift the reading, and an air relief groove along the gaging body so blind bores don't build up back-pressure.\u003c\/p\u003e\n\u003ch2\u003eWhat we need to quote\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBore size and tolerance\u003c\/li\u003e\n\u003cli\u003eBore depth, and whether it is through or blind\u003c\/li\u003e\n\u003cli\u003eGrooves, cross holes or chamfers near the measuring point\u003c\/li\u003e\n\u003cli\u003eYour readout make and model, or single vs. dual master\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHandles, hose assemblies, extensions and readout fittings are on the \u003ca href=\"\/collections\/air-gage-accessories\"\u003eaccessories page\u003c\/a\u003e. Full dimensions are in the \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/Air_Gaging_LLC_Air_Tooling_Catalog.pdf\"\u003eair tooling catalog (PDF)\u003c\/a\u003e.\u003c\/p\u003e","brand":"Air Gaging LLC","offers":[{"title":"Default Title","offer_id":50543241199871,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/air-plug-gage-super-blind-aps.jpg?v=1790459495"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/collections\/air-plug-gage-thru-hole-apt.jpg?v=1790459977","url":"https:\/\/airgaging.com\/collections\/air-probes.oembed","provider":"Air Gaging LLC","version":"1.0","type":"link"}