{"product_id":"topcon-at-b4-automatic-24x-auto-level-surveying","title":"Topcon AT-B4 Automatic 24X Auto Level Surveying","description":"\u003cp\u003eThe Topcon AT-B4 is the 24x model in Topcon’s AT-B series of automatic optical levels, an everyday instrument for grade checking, elevation transfer and level runs on construction, engineering and survey sites. Its compensator — a magnetically damped pendulum hung on four high-tensile suspension wires — self-levels the line of sight to 0.5 arcsec and settles quickly, holding a standard deviation of ±2.0 mm over a 1 km double-run.\u003c\/p\u003e\u003cp\u003eThis listing is for the Japan-built AT-B4 pictured, with 20 cm close focus for tight interior work, a free-rotating horizontal circle graduated in 1° steps for basic angle layout, and IPX6 water resistance for wet site conditions. The unit has been through Network Orbitz’s 12-point Orbitz Certified testing.\u003c\/p\u003e\u003cp\u003eCondition: Used · Tested, as listed. The photographs are of the actual unit you’ll receive, covered by the Network Orbitz 30-Day Warranty.\u003c\/p\u003e","brand":"Topcon","offers":[{"title":"Default Title","offer_id":54018087584108,"sku":"AT-B4","price":195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/2568\/7660\/files\/AT-B4-stock-1.jpg?v=1784216317","url":"https:\/\/technetworksystems.net\/products\/topcon-at-b4-automatic-24x-auto-level-surveying","provider":"Tech Network Systems","version":"1.0","type":"link"}