Do i have the #30-090

A handy person from Massachusetts says:
August 18, 2014
It appears that your part # 30-090 is what I am looking for except that it states in the discription that the arm length is 5" long and the one I have is approx 4.4" long.

Is there another crank I should be looking at?

Thanks, Rich
User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
August 19, 2014
This actually looks more like our 39-188 and 39-187. I know it's hard to tell the difference, but the key part is the gear arm. If you look closely, you can see the 39-089 and 39-090 have a sort of "Z" shaped gear arm, while the 39-188 and 39-187 have more of a "W" shaped gear arm.

Neither have a 4.4" long link arm, though. Can you confirm that measurement? If so, you may have to adjust the placement of the bracket in order for them to work.
Window Dyad Crank, 5"
Window Dyad Crank, 5"
39-090
$43.70
Window Dyad Crank, 5"
Window Dyad Crank, 5"
39-089
$43.70
Sash Dyad Crank, 5"
Sash Dyad Crank, 5"
39-188
$37.10
Sash Dyad Crank, 5"
Sash Dyad Crank, 5"
39-187
$37.10
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