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Inventories (Tables)
12 Months Ended
Dec. 31, 2019
Inventories  
Schedule of inventories

Inventories consisted of the following at December 31, (dollars in millions):

    

2019

    

2018

Raw materials

$

188.8

$

164.5

Work-in-process

206.4

 

182.4

Finished goods

104.5

 

94.8

Demonstration units

77.5

 

67.9

Inventories

$

577.2

$

509.6