....linear digital measuring systems from fractions to 10 microns....


ProScale Model 250/250G Measuring System

ProScale Model 250 shown with Encoder and Guide Clip*                          End View of Scale profile

ProScale Model 250 & 250G use Absolute measuring technology.
These measuring systems that are ideal for machinery applications or any measuring environment where the need to always remember its position is important.
This system is designed to be used in a 'Scale Stationary, Encoder Moving' configuration.
The speed of ABSolute encoders is limited to 15 ips.  For applications requiring a faster slew rate, consider Model 290.

Select the Model 250 for Battery operation and applications employing a WIRELESS data transmitter.
Select the Model 250G for 12-24VDC operation OR in high electrical noise environments (i.e. inverters, welders etc.)
OR when using WIRED data collection adapters.
(Consider ProScale Model 590 or ProKit 590 for building dimensional measuring systems)

* The Guide Clip is used to capture the ENCODER and move it across the SCALE. 


  • No Gap to Set: All Encoders are "captive" on the Scale so you never need to set the Encoder gap.

  • Battery or 12-24 VDC Operation: Readouts are available that operate on battery, or 12-24 VDC.

  • Set and Forget: M250/250G with ABSolute Technology will remember its place even when power is lost.

  • High Noise Immunity: Electrical noise, magnetic fields, or power transients affecting the measurement accuracy or signal integrity is rare.

  • Scalability: The 250/250G supports multiple Encoders and Readouts operating simultaneously on the same Scale.

  • Wireless Data: Systems are available with 2 way ProRF-SPC or Encoder wireless data transmitters.

  • Encoder Speed: up to 15 inches per second.

  • RoHS compliant Lead Free Product

  • LIFETIME limited warranty.  



Model Measurement Range Accuracy (measured at the Encoder output)
250-2  and 250-2G up to 24 inches   (600mm) better than: .004in  ( .10mm)
250-4  and 250-4G up to 52 inches   (1.3m) better than: .008in  ( .20mm)
250-5  and 250-5G up to 60 inches   (1.5m) better than: .008in  ( .20mm)
250-8  and 250-8G up to 96 inches   (2.4m) better than: .008in  ( .20mm)
250-10 and 250-10G up to 120 inches   (3.0m) better than: .008in  ( .20mm)
250-15 and 250-15G up to 180 inches   (4.5m) better than: .008in  ( .20mm)
250-20 and 250-20G up to 240 inches   (6.0m) better than: .008in  ( .20mm)
Custom sizes are available to measure up to 20 feet (6m)       DIMENSIONS    

Purchase ProScale Model 250 (Battery operation)
Model  Measuring Range System Price
(Scale + Encoder)

Model 250-2    24 in  (600mm) $ 310
Model 250-4 52 in  (1.3m) $ 440
Model 250-5 60 in  (1.5m) $ 440
Model 250-8 96 in   (2.4m) $ 660
Model 250-10 120 in   (3.0m) $ 860
Model 250-15 180 in   (4.5m) $ 1200
Model 250-20 240 in   (6.0m) $ 1500

Prices above include the SCALE and ENCODER only.
Additional price for selected Readout/Encoder choices are shown in the drop down selection box.

Purchase ProScale Model 250G  (12-24VDC operation)
Model  Measuring Range System Price
(Scale + Encoder)

Model 250G-2    24 in  (600mm) $ 350
Model 250G-4 52 in  (1.3m) $ 510
Model 250G-5 60 in  (1.5m) $ 510
Model 250G-8 96 in   (2.4m) $ 750
Model 250G-10 120 in   (3.0m) $ 950
Model 250G-15 180 in   (4.5m) $ 1260
Model 250G-20 240 in   (6.0m) $ 1600

Prices above include the SCALE and ENCODER only.
Additional price for selected Readout/Encoder choices are shown in the drop down selection box

  Digital Readout choices

  Basic LCD

  General Purpose LCD

 In-Panel LCD

950 Series LCD

In-Panel LED

 2 Input In-Panel LCD

VDRO Software

Accessories for ProScale Model 250/250G

SPC RF Transmitter & Receiver


ENCODER RF Transmitter/Receiver


ProMUX-3, 3-1 Multiplexer


AIU D-A Converter


Each ProScale Model 250/250G System Includes:
  • 1 Absolute Measuring Scale -  Measuring Range + 4 inches = Physical length
  • 1 Absolute Encoder (with selected cable length)
  • 1 Digital Readout (if selected)
  • 1 Pkg. Mounting Hardware containing:
    • Mounting Screws (8-32 x 3/8 flat head Phillips)
    • 1 Guide Clip (used to move the encoder along the scale)
  • Quick Start Installation and Operation Manuals
E-Mail Request for a Custom System

 ProScale Model 250/250G Replacement Parts





 System Manuals

All LCDs Manual

LED Manual

2 Input Manual

VDRO Manual


E-Mail Assistance with Replacement Parts

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