{"product_id":"topcon-at-b3a-28x-auto-level-dumpy-level-1012379-03","title":"Topcon AT-B3A 28X Auto Level Dumpy Level 1012379-03","description":"\u003ch2\u003eTopcon AT-B3A 28X Auto Level — Reliable Optical Levelling for Every Site\u003c\/h2\u003e\n\u003cp\u003eThe Topcon AT-B3A is a 28x magnification automatic level (dumpy level) trusted by builders, plumbers, drainers, landscapers and civil crews for site set-out, footings, concrete and drainage. Its magnetically damped compensator settles the line of sight quickly and stays steady even near heavy machinery or busy roads, while the IPX6 sealed body shrugs off downpours and resists internal fogging. A 20 cm minimum focus makes it easy to use in tight spaces, and the built-in horizontal circle lets you read angles directly.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e28x magnification\u003c\/strong\u003e with 36 mm objective lens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnetic damping compensator:\u003c\/strong\u003e Fast, stable automatic levelling, even with vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e±1.5 mm accuracy\u003c\/strong\u003e per 1 km double run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 cm minimum focus:\u003c\/strong\u003e Ideal for confined spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIPX6 water protection\u003c\/strong\u003e with anti-fog design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorizontal circle:\u003c\/strong\u003e Read angles in 1° or 1 gon increments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGun sight\u003c\/strong\u003e for quick target acquisition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eTopcon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eModel\u003c\/th\u003e\n\u003ctd\u003eAT-B3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e1012379-03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMagnification\u003c\/th\u003e\n\u003ctd\u003e28x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eObjective aperture\u003c\/th\u003e\n\u003ctd\u003e36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eResolving power\u003c\/th\u003e\n\u003ctd\u003e3.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eField of view (at 100 m)\u003c\/th\u003e\n\u003ctd\u003e2.5 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMinimum focus\u003c\/th\u003e\n\u003ctd\u003e20 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAccuracy (1 km double run)\u003c\/th\u003e\n\u003ctd\u003e±1.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFocusing knob\u003c\/th\u003e\n\u003ctd\u003e1-speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSighting aid\u003c\/th\u003e\n\u003ctd\u003eGun sight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCircular level sensitivity\u003c\/th\u003e\n\u003ctd\u003e10'\/2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHorizontal circle diameter\u003c\/th\u003e\n\u003ctd\u003e103 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLength\u003c\/th\u003e\n\u003ctd\u003e215 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWater protection\u003c\/th\u003e\n\u003ctd\u003eIPX6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eKit Inclusions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Topcon AT-B3A auto level\u003c\/li\u003e\n\u003cli\u003eHex wrench\u003c\/li\u003e\n\u003cli\u003eVinyl cover\u003c\/li\u003e\n\u003cli\u003eCleaning cloth and lens cap\u003c\/li\u003e\n\u003cli\u003eHard carry case\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTripod and staff sold separately.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs an auto level the same as a dumpy level?\u003c\/h3\u003e\n\u003cp\u003eOn Australian sites the terms are used interchangeably. Strictly, an auto level like the AT-B3A has an internal compensator that automatically levels the line of sight once the circular bubble is centred, which makes set-up faster and more accurate than a traditional dumpy level.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the Topcon AT-B4, AT-B3A and AT-B2?\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/topcon-at-b4-24-magnification-dumpy-level-at-b4-1\"\u003eAT-B4\u003c\/a\u003e has 24x magnification and suits general building work. The AT-B3A steps up to 28x and ±1.5 mm\/km accuracy for longer sight lines. The AT-B2 is the precision model with 32x magnification, a 2-speed focus and ±0.7 mm\/km accuracy for engineering and survey levelling.\u003c\/p\u003e\n\u003ch3\u003eWhat accuracy can I expect?\u003c\/h3\u003e\n\u003cp\u003eThe AT-B3A is rated to ±1.5 mm per 1 km double-run levelling. Over typical building site distances, that means millimetre-level readings when the staff is held plumb.\u003c\/p\u003e\n\u003ch3\u003eDoes it come with a tripod and staff?\u003c\/h3\u003e\n\u003cp\u003eNo. The kit includes the level, hard case, cover, lens cap and tools. Pair it with a flat head tripod such as the Topcon \u003ca href=\"\/products\/topcon-heavy-duty-flat-head-tripod-07-10-fh-p\"\u003eheavy duty flat head tripod\u003c\/a\u003e and a levelling staff such as the \u003ca href=\"\/products\/topcon-5m-5-section-e-face-aluminium-levelling-staff-07-10-55es\"\u003eTopcon 5 m E-face staff\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs the AT-B3A waterproof?\u003c\/h3\u003e\n\u003cp\u003eIt is IPX6 rated, so it is protected against powerful water jets and heavy rain, and its sealed design helps prevent fogging inside the telescope.\u003c\/p\u003e\n\u003ch3\u003eHow often should an auto level be checked?\u003c\/h3\u003e\n\u003cp\u003eWe recommend an annual service and calibration check, plus a quick two-peg test on site if the level has been knocked. For service, contact Topcon Australia on 1300 965 273; there are service and calibration centres in Sydney, Brisbane, Melbourne, Perth, Adelaide, Darwin, Canberra and Hobart.\u003c\/p\u003e\n\u003ch3\u003eWhat warranty does the AT-B3A have?\u003c\/h3\u003e\n\u003cp\u003eTopcon Australia gives new auto levels a 5-year limited warranty from the date of purchase. Keep your proof of purchase, as damage from drops or misuse is not covered.\u003c\/p\u003e\n\u003ch2\u003eShop with Confidence\u003c\/h2\u003e\n\u003cp\u003e✅ \u003cstrong\u003e30-Day Returns\u003c\/strong\u003e — Not happy? Return it within 30 days for a full refund, no questions asked.\u003cbr\u003e🚚 \u003cstrong\u003eFast Dispatch\u003c\/strong\u003e — In-stock orders dispatched same or next business day.\u003cbr\u003e🔧 \u003cstrong\u003eExpert Support\u003c\/strong\u003e — Our team knows tools. Call or email us if you need help choosing the right product.\u003c\/p\u003e","brand":"Topcon","offers":[{"title":"Default Title","offer_id":50725703745711,"sku":"1012379-03","price":1233.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/0134\/9807\/files\/topcon_at-b3a_front__57667.1698680112.png?v=1792796585","url":"https:\/\/toolup.com.au\/products\/topcon-at-b3a-28x-auto-level-dumpy-level-1012379-03","provider":"Toolup Australia","version":"1.0","type":"link"}