Scale Specifications
Standard and Customized Scales
MicroE Systems offers a wide array of chrome on glass scales for the highest accuracy and best thermal stability. Easy to install, standard
linear and rotary scales meet most application requirements. Customized linear, rotary, and rotary segment scales are available where need-
ed. All scales include an optical index. Mercury's glass scales save time by eliminating motion system calibrations or linearity corrections
required by other encoders, and provide better thermal stability than metal tape scales.
Options include:
• Standard linear: 18mm - 2m
• Standard rotary: 12mm - 107.95mm diameter, with or without hubs
• Custom linear*: special lengths, widths, thickness, index mark locations and special low CTE materials
• Custom rotary*: special ID's, OD's (up to 304.8mm), index mark outside the main track and special low CTE materials
• Mounting of hubs for rotary scales: MicroE Systems can mount and align standard, custom, or customer-supplied hubs
• Rotary segments*: any angle range; wide range of radius values
*Custom scales or rotary segments are available in OEM quantities. Contact your local MicroE Systems sales office.
Standard Short Linear Scales
130mm and Shorter
Key: inches[mm]
Scale Length
0.03ꢁ [0.9]
Measured Length
is always 5 mm less
then total length
Specifications
Accuracy
3µm standard
1µm available
Soda lime glass
8ppm/ꢀC
0.ꢀ50 [ꢁ.35]
Material
Typical CTE
Index
Center Index
End Index
Center or End
Model
Scale Length
Measured Length
L18
0.709 [18]
0.512 [13]
L30
1.181 [30]
0.984 [25]
L55
2.165 [55]
1.969 [50]
L80
3.150 [80]
2.953 [75]
L105
4.134 [105]
3.937 [100]
L130
5.118 [130]
4.921 [125]
Custom scales available
Standard Long Linear Scales
155mm and Longer
Key: inches[mm]
0.098 [ꢀ.5]
Scale Length
Specifications
Accuracy
Measured Length
is always 5 mm less
then total length
5 µm ꢃ1m
5 µm/m >1m
Soda lime glass
8ppm/ꢀC
0.787 [ꢀ0.00]
End Index
Material
Typical CTE
Index
Center or End
Center Index
Model
Scale length
Measured length
L155
6.102 [155]
5.906 [150]
L225
8.858 [225]
8.661 [220]
L325
L425
L525
L1025
L2025
12.795 [325] 16.732 [425] 20.669 [525] 40.354 [1025] 79.724 [2025]
12.598 [320] 16.535 [420] 20.472 [520] 40.157 [1020] 79.528 [2020]
Custom scales available
All Specifications are subject to change. All data is accurate to the best of our knowledge.
MicroE Systems is not responsible for errors.
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MICROESYS [ GSI Group, Inc. ]
