DRO203 Digital Readout

DRO203 Digital Readout

The most popular digital readout system in the machine tool marketplace, the DRO203 incorporates 7-inch color display technology with versatile software. Designed and manufactured in the USA, ACU-RITE readouts are the first choice of machine tool builders and users alike.

DRO203 support

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    Milling-specific features

    • Centerline calculation enables you to establish workpiece zero and midpoint
    • Bolthole pattern calculations with graphics (full and partial circles/linear patterns)

    Turning-specific features

    • Instant radius/diameter conversion
    • Taper Calculator
    • CSS (option)
    • Lock axis feature

    Dynamic zoom

    The currently moving axis can be geographically highlighted. In “dynamic zoom” mode, the position value is zoomed to its maximum size depending on the number of digits. This greatly improves legibility—especially from a great distance. Click here to see Dynamic Zoom in action.

    Installation guide

    When you switch on the digital readout for the first time, the DRO203 supports you with an installation guide. You are led step by step through the most important settings until the device is ready for operation.

    Day/night switching

    Depending on the ambient-light conditions at the machine, you can switch the screen of the DRO203 to a light or dark background.

    Curious about ROI?

    With our DRO ROI calculator, you can input your shop’s characteristics and find out how quickly a DRO can pay you back.

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    International documentation

    Visit our Manuals & Flyers page and scroll to the bottom for international documentation.

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    Frequently Asked Questions

    What is the difference between DRO203 and DRO300?

    DRO203 works with up to three axes. DRO300 series works with up to four. Both come with milling- and turning-specific functions and common cycles preprogrammed. In addition, the DRO300 series offers a program and space for saving up to 99 tool offsets/diameters.

    What is the advantage of 3-axis DRO on a lathe compared to two-axis?

    During milling, a 3-axis DRO allows for direct position feedback on the quill and knee. A 3-axis DRO can account for the cross slide, longitudinal and compound axes and allow for vectoring within the DRO. They’re also useful on lathes with more than one carriage, where two reader heads on the same scale create an X/Z/Z1 axis arrangement.


    Application Milling, turning, grinding, boring and general purpose
    Axes 2 or 3 from A to Z and Z0
    Encoder Inputs TTL
    Display step
    • Adjustable, max. 7 digits
    • Linear axis: 1 mm to 0.0001 mm
    • Angular axis: 1° to 0.001° (00° 00′ 01”)
    • 3 Axes
    • 7-inch color wide screen (15:9)
    • Resolution 800 x 480 pixels for Position Values, Dialog Messages, Input and Graphic Functions
    Status Display
    • Tool
    • Reference point
    • Operating function
    • Feed rate
    • ABS/INC
    • mm/inch
    • stopwatch
    Axis Display Standard
    Common Functions
    • Job Clock / Stop Watch
    • Feed Rate Display
    • Multiple Language Support
    • Absolute/Incremental
    • Near-Zero Warning with Graphics
    • Help Function
    • 16 Tool Offsets/Diameter
    • Preset and Zero Reset
    • 4 Function Calculator/Trig Calculator
    • Instant Inch/mm Conversion
    • Position-Trac™ Home Reference System
    • Linear/Non-Linear Compensation up to ±9,999 ppm
    Turning Specific Functions
    • Taper calculator
    • Radius/diameter switching
    • Freezing the tool position for back-off
    • Vectoring: X/Y display of the traverse path with inclined top slide
    Milling Specific Functions
    • Bolt-hole Pattern Calculations with Graphics (full and partial circles/linear patterns)
    • Centerline Calculation establish workpiece zero and midpoints
    Cycles Oblique line, circular arcs; only for milling, drilling, boring:circular and linear hole patterns
    Error Compensation
    • Axis error: Linear and nonlinear over up to 200 points
    • Backlash compensation: for compensation of reversal error
    Data Interface USB 2.0 type C
    • For Output of Parameters to a USB Stick or PC
    • For Input of Parameters, Remote Control of Keys and Commands
    • Single-Position Tilting Base
    • Multiposition Holder
    • Mounting Frame
    • Protective Cover
    Electrical Requirements AC 100 V to 240 V (±10 %), 50 Hz to 60 Hz (±5 %), ≤ 33 W
    Operating Temperature 0° to 45º C (32º to 113º F)
    Protection EN60529 IP 40, Front Panel IP 54
    Weight ~1.9 kg