DRO 100

Simple digital readout for one, two, or three axes

The ACU-RITE DRO 100 digital readouts are well-suited for general applications on milling, drilling, boring, and lathe machines with one, two, or three axes.

With its sturdy housing and splash-proof membrane keyboard, the DRO 100 is built for the workshop. The DRO 100 displays position values, status information, and additional useful data on a TFT color screen.

The most important functions are available quickly and directly via function keys. If the DRO 100 is connected to a lathe, then you can simply switch from radius to diameter display. For lathes with a separate top slide, the sum display feature on the 3-axis version of the DRO 100 allows you to display the saddle and top slides either together or separately.

Data Interfaces
A USB port enables the writing and reading out of data and files.


Axes 1, 2 or 3
Encoder inputs TTL
Display step1) Adjustable, max. 7 digits
Linear axis: 1 mm to 0.0001 mm
Angular axis: 1° to 0.001° (00° 00′ 01”)
Display 7″ TFT color screen (15:9); resolution 800 x 400 pixels for position values and dialog
Display 5.7″ monochrome flat-panel display for position values, dialogs and inputs, and soft keys
Status display Freed rate, ABS/INC, mm/inch
  • REF reference-mark evaluation for distance-coded or single reference marks
  • Distance-to-go mode
  • mm/inch switching
  • Absolute-incremental display
  • Integrated help function
  • Axis coupling
  • Radius/diameter display
Error compensation Linear axis error
Data interface USB connection, Type C
Optional accessories Stand, holder for mounting arm, protective cover
Data interface USB (type B connector), up to 115 200 baud
Power connection AC 100 V (–10 %) to 240 V (+5 %), 50 Hz to 60 Hz (±5 %), 33 W
Operating temperature 0° C to 45° C (storage temperature –20° C to 70° C)
Protection(IEC 60 529)  IP 40, front panel IP 54
Mass 1.6 kg
* Please select when ordering
1) Depends on the signal period of the connected encoder


Please note that only the products that are listed on this website are available for purchase in the United Kingdom.