{"product_id":"dual-metric-imperial-capillary-tube-gauge-hvac-stainless-steel","title":"Dual Metric \u0026 Imperial Capillary Tube Gauge | HVAC Steel Tool","description":"\n\u003ch2\u003eDual-Marked Capillary Tube Gauge – Metric \u0026amp; Imperial | Stainless Steel\u003c\/h2\u003e\n\u003cp\u003eMeet the professional-grade \u003cstrong\u003eCapillary Tube Gauge\u003c\/strong\u003e built for HVAC technicians, hydraulic engineers, plumbers, and industrial mechanics. This precision stainless steel tool features both \u003cstrong\u003emetric and imperial scales\u003c\/strong\u003e on a single instrument — so you can measure copper and capillary tube diameters accurately without ever needing a conversion chart.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-Read Double-Jaw Design:\u003c\/strong\u003e Precision scale with a dual-jaw configuration for fast, accurate measurement of copper and capillary tubes during HVAC installation and pipe inspection — saving time and boosting efficiency on every job.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Conversion Required:\u003c\/strong\u003e The metric\/imperial dual-scale display lets you work seamlessly across global engineering standards. Perfect for international projects and cross-border maintenance work where both measurement systems may be in use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Size Step Drill Fit:\u003c\/strong\u003e Step-drilled slots support a wide variety of tube dimensions, making this gauge compatible with refrigeration systems, plumbing projects, pneumatic lines, and hydraulic applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Sided Wall Thickness Inspection:\u003c\/strong\u003e Symmetrical groove flange design delivers accurate inner-outer gap readings, minimising cutting errors and ensuring consistent wall thickness checks during metalworking tasks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt to Last:\u003c\/strong\u003e Constructed from heavy-duty \u003cstrong\u003estainless steel\u003c\/strong\u003e with long-term scale clarity, this tool is engineered for repeated, reliable use in workshops, construction sites, and demanding industrial environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Capillary Tube Gauge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e RoHS, WEEE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Approx. 14.3 × 3.9 cm \/ 5.63 × 1.54 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. 65 g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScale:\u003c\/strong\u003e Metric \u0026amp; Imperial (dual-marked)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Capillary Tube Gauge (Stainless Steel)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis capillary tube gauge is ideal for \u003cstrong\u003eHVAC technicians, refrigeration engineers, hydraulic and pneumatic system mechanics, plumbers, and industrial maintenance professionals\u003c\/strong\u003e. Whether you're fitting pipes in a new system or troubleshooting an existing one, the dual-scale design eliminates guesswork and keeps your workflow moving.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Tools You May Also Need\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/calligraphy-fountain-pen-0-38mm-fine-nib-gold-trim-gift-pen\"\u003e0.38mm Fine Nib Calligraphy Fountain Pen | Gold Trim Gift\u003c\/a\u003e — for precision marking and labelling on the job\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/1-inch-round-dot-label-stickers-500-per-roll-color-labels\"\u003e1-Inch Round Dot Label Stickers – 500\/Roll, 10 Colors\u003c\/a\u003e — perfect for colour-coding pipes and fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSafety \u0026amp; Standards Reference\u003c\/h3\u003e\n\u003cp\u003eFor guidelines on safe tool use in industrial and workshop environments, refer to the \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Hand \u0026amp; Power Tools Safety Standards\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to different lighting and screen settings, the item colour may slightly vary from the picture. Due to manual measurement tolerances, please allow a 1–2 cm difference in stated dimensions.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What types of tubes can this capillary tube gauge measure?\u003c\/h4\u003e\n\u003cp\u003eA: This gauge is designed to measure capillary and copper tubes commonly used in HVAC systems, refrigeration units, hydraulic lines, and pneumatic systems. The step-drilled design accommodates multiple tube dimensions, making it versatile for a wide range of industrial and professional applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the gauge support both metric and imperial measurements?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The dual-marked scale displays both metric and imperial units simultaneously, so there is no need for manual conversion. This makes it particularly useful for professionals working on international projects or servicing equipment built to different measurement standards.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this tool durable enough for daily workshop use?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The gauge is constructed from stainless steel with a sturdy metal body and permanently etched scale markings designed for long-term clarity. It is built to withstand repeated use in demanding environments such as workshops, construction sites, and refrigeration service settings.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does the dual-sided inspection feature mean?\u003c\/h4\u003e\n\u003cp\u003eA: The dual-sided inspection refers to the symmetrical groove flange design, which allows you to measure both the inner and outer diameters (or wall thickness) of a tube in a single tool. This reduces the need for multiple gauges and helps minimise cutting and fitting errors during metalworking tasks.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What types of tubes can this capillary tube gauge measure?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This gauge is designed to measure capillary and copper tubes commonly used in HVAC systems, refrigeration units, hydraulic lines, and pneumatic systems. The step-drilled design accommodates multiple tube dimensions, making it versatile for a wide range of industrial and professional applications.\"}}, {\"@type\": \"Question\", \"name\": \"Does the gauge support both metric and imperial measurements?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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