A Tech Authority, Inc.
13745 Stockton Ave.
Chino, CA 91710
(909) 614-4522
atechauthority.com

The Magnescale GB-A (SR 128) series magnetic linear scale offers excellent durability and reliability in even the harshest shop environments. 

The Magnescale GB-A (SR 128) series feature Magnescale® technology, which is reliable in metal cutting environment, offering excellent resistance to oil, dirt, vibration and shock.  The GB-A has a compact design (25mm x 21mm) and measuring lengths up to 86" (2200mm) and offer the following features...

• AB/Quadrature TTL signal
• Accuracy of 5µm/M
• Reference mark center or user selectable
• Resolution of 0.5µm
• Operating temperature from 0 to 40C
• Three meter cable with DB9 connector
• IP54 rating
• Same expansion coefficient as machine tools
• Magnescale® technology
• Measuring travels from 2" to 86' (50mm to 2200mm)

When upgrading, the GB-ER (SR-138) series has the same bolt hole pattern, overall length and reader head dimensions as the discontinued popular SR128 and GB-A scales, however the output signal for the SR138 is different: 5v TTL.  We can assist you with possible adapter cables, based on the model readout being used.