Modelbouw & R/C Forum België

I've been going through may shed and have found these items. They've been in there for some time but I haven't got a clue what they are or what they do.
Anyone got any ideas or leads as to what engines or aircraft they would have been fitted to. One has ROTOL details on it so I assume its something to do with propellers ??
The first 4 pics are of the ROTOL marked item.
The rest are of the 2nd item which has several hand marked inscriptions such as ASSY/ 602152007 or TYPE 6 0214 004? SERIAL No 62573
Any ideas ??Please Help. Thanks !
I didn't find the right solution from the internet.
References: http://forum.keypublishing.com/showthre ... elp-Please
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No idea eider Vic.