AT 250

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Short Description
  • Measuring on components of large dimensions is possible and not influenced by deflections. The use of the clamping cap and the insensibility to deflection and vibration allows measuring even on large components.

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Product Overview
  • Key Features

    • No deflection or vibration
    • Large and irregular components can be clamped
    • Rockwell and Brinell value direct read-out according to international standards
    • SDM technology with 8core processor
    • User friendly touchscreen display

    Product Description

    Enhanced version of the AT130 model with advanced electronics and the most up-to-date communication systems.

    A real innovation in the Rockwell tester testing field, with thousands of units sold throughout the world from the early 70's, due to its fast test cycle and the ability to test bulky items with the unique clamping system for overhanging pieces and the absolute insensibility to bending and deflection

  • Working Principle

    • MOD DR: Rockwell
    • MOD DSR: Superficial Rockwell


    • MOD DR: 60kgf, 62.5kgf, 100kgf, 125kgf, 150kgf, 187,5kgf (N 588, 613, 981, 1226, 1471, 1839)
    • MOD DSR: 10kgf, 15kgf, 15.6kgf, 30kgf, 31.2kgf, 45kgf (N 98, 147, 153, 294, 306, 441)


    • MOD DR: 10kgf (98.1N)
    • MOD DSR: 3kgf

    Load Time

    • Selectable

    Minimum Measurable Diameter

    • 4mm (penetrator 048 + group 022)

    Standard Scales

    • MOD DR: HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK, Brinell HB30 plus other scales on request
    • MOD DSR: HR15N, HR30N, HR45N, HR15T, HR30T, HR45T, HR15W, HR30W, HR45W, HR15X plus other scales on request


    • 400 files with 2500 memorizable values for every file


    • On touchscreen colour display 800 x 480 pixel 150 X 90 mm

    Selectable functions

    • scale selection
    • load time
    • min. depth
    • mm/inch
    • rounds correction
    • calibration
    • language
    • date/time
    • tollerances
    • penetrator time
    • file
    • measure history
    • prints
    • stats
    • icons
    • conversions
    • sequence
    • password

    Power Supply

    • Autosetting from 100VAC - 240VAC

    Working Area Dimensions

    • STAND TX: Max. measurable height: 240mm (400mm without elevating screw) depth: 225mm
    • STAND NX: Max. measurable height: 210mm / depth: 240mm

    Output interfaces

    • USB Printer - export on USB Key
    • OPTIONAL: RS232, RS485, Profibus, Ethernet, MODBUS-TCP, Bluetooth


    • AT250NX 95kg
    • AT250TX 125kg
    • AT250CAR 165kg
    • AT250MUR 115kg

    Working Conditions

    • 0°C-50°C


    • AT250NX 30cm x 60cm x h73cm
    • AT250TX 30cm x 60cm x h95cm
    • AT250CAR 95cm x 33cm x h133cm
    • AT250MUR 30cm x 70cm x h110cm

    Norms and Certifications

    • Rockwell - ASTM E-18 - ISO6508
  • ASTM E-18
  • ISO 6508
Product Brochure

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