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Property, Plant and Equipment
6 Months Ended
Mar. 28, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
9.
Property, Plant and Equipment
The gross carrying amount and accumulated depreciation of property, plant and equipment at the end of each period was as follows:
 
March 28,
2014
 
September 27, 2013
Property, plant and equipment, gross
$
1,918.3

 
$
1,873.7

Less: accumulated depreciation
(920.8
)
 
(876.3
)
Property, plant and equipment, net
$
997.5

 
$
997.4



Depreciation expense for property, plant and equipment was $26.1 million and $24.4 million during the three months ended March 28, 2014 and March 29, 2013, respectively and $52.4 million and $49.2 million during the six months ended March 28, 2014 and March 29, 2013, respectively. Depreciation expense included depreciation on demonstration equipment of $0.9 million and $0.9 million for the three months ended March 28, 2014 and March 29, 2013, respectively, and $2.0 million and $1.7 million for the six months ended March 28, 2014 and March 29, 2013, respectively. Demonstration equipment was included within other assets on the unaudited condensed consolidated balance sheets.