Hi,

According to the data on my web site, there is no such thing as a 5493.
http://www.cumulus-soaring.com/winter/varios.htm

But my web site was created using a recent catalog which may not have been
100% complete.

Yes, the flask size is critical.

Is there a model number on the unit. That may help nail down whether it is
a standard, or sensitive, or logarithmic unit.

Paul Remde

wrote in message
...
Anyone know what size flask is requied with this unit. I have one and
can not find specs on Winter's web site. Also, is the flask size
critical to the accuracy of the unit? Instrument is 57mm and +/- 10
knots. S Nr. 05493. Instrument was purchased by me second hand.