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Inventories (Tables)
6 Months Ended
Jun. 30, 2019
Inventories  
Schedule of inventories

Inventories consisted of the following (dollars in millions):

June 30, 

    

December 31, 

    

2019

    

2018

Raw materials

$

195.0

$

164.5

Work-in-process

 

221.4

 

182.4

Finished goods

 

105.6

 

94.8

Demonstration units

 

72.6

 

67.9

Inventories

$

594.6

$

509.6