Challenge to escape! # 140 Room with bobbin

[old biker]

Room with bobbin is a new Japanese point and click, room escape game by tomolasido. Search for clue's and items, use them ,solve puzzles and escape.

Good luck

https://www.tomolasido.net/dsts140/dsts140.html

Please use spoilers for hints and walkthroughs:
[spoiler=Title Here]Enter text here...[/spoiler]

Please do not post a video walkthrough for 7 days.

[graywolf]

I'm stuck; I have 7 spools, but still have 4 digits and arrow box to solve....
Solved arrow box, still need 1 key piece, and 4 digit box not enterable?
Got it....out /w whale.

[tipper75]

Whale? It was a manatee!

[old biker]

dolphin ?