<s>
The	O
Deltar	B-Device
(	O
Delta	O
Getij	O
Analogon	O
Rekenmachine	O
,	O
Dutch	O
for	O
Delta	O
Tide	O
Analog	O
Calculator	O
)	O
was	O
an	O
analog	O
computer	O
,	O
used	O
for	O
the	O
design	O
and	O
implementation	O
of	O
the	O
Delta	O
Works	O
from	O
1960	O
until	O
1984	O
.	O
</s>
<s>
The	O
design	O
of	O
the	O
Deltar	B-Device
was	O
based	O
on	O
the	O
hydraulic	O
analogy	O
of	O
the	O
properties	O
and	O
behaviour	O
of	O
water	O
and	O
electricity	O
.	O
</s>
