8.5.1 System of Units with Rack Units and Division Units
In the Engineering Base systems of units, rack units and division units as used on describing electronic housings are now also available:
|
Designation |
|
Description |
|
U |
Unit |
1U equals 44.45 mm resp. 1 3/4 inches |
|
DU |
Division Unit |
1DU equals 18.00 mm |
|
HE |
Höheneinheit |
1HE equals 44.45 mm resp. 1 3/4 inches |
|
TE |
Teilungseinheit |
1TE equals 18.00 mm |
The new units are contained in the unit groups Length and Length Small. There are no decimal places available for their values; e.g. 1HE, 2HE, etc.