Galoots,

An online search finds that "WF Stanley" manufactured ships compasses and 
the link below reports a Patt. 1135 "moulded type corrector".

https://collection.sciencemuseumgroup.org.uk/documents/aa110099165/g30-govrm-
drwgs-pattern-1135-moulded-type-corrector

I believe the corrector box would hold the rods and magnets used to "swing" 
the compass on a large steel hulled vessel. While a magnetic compass is 
usually mounted in a binnacle there are occasions when it is suspended 
overhead from brackets in a gimbal.  I worked on such a vessel and the 
corrector rods for our magnetic compass were mounted in a wooden box 
overhead just aft of the compass gimbal. Our box was a much simpler 
arrangement that the one in "sushimonster's" photos.

For anyone interested in compass "swinging" I have linked the article below. 
I had the pleasure of being on watch in the wheelhouse when Captain Barber 
swung our compass shortly before his retirement.  A true master and very 
friendly fellow.

https://professionalmariner.com/swinging-a-compass/

Marv Paisner
Kootenay Lake, BC




-----Original Message----- 
From: Kirk Eppler via groups.io
Sent: Monday, February 26, 2024 2:48 PM
To: John Ruth
Cc: Marvin Paisner ; musashisakai@y... ; oldtools@g...
Subject: Re: [oldtools] Help with an unknown item - possibly maritime?

Can't find Marvin's response, except in the archives, but it sounds
reasonable, so I'll respond to John's response to Marvin's theory.

For those who don't know, here is a section on how its done, but nothing
noting  storage for the magnets

https://www.google.com/books/edition/Elements_of_Navigation_Chart_Lead_Log_De/M0
VLAAAAMAAJ?hl=en&gbpv=1&dq=marine+compass+compensation++rod+storage&pg=RA2-PA21&
printsec=frontcover

Kirk in Half Moon Bay

On Mon, Feb 26, 2024 at 10:41 AM John Ruth  wrote:

>
> > On Feb 26, 2024, at 12:31 PM, Marvin Paisner  wrote:
> >
> > \ufeffTaking a long shot here, but it may be for holding the metal
> compensating rods used to adjust a ship's magnetic compass that has been
> thrown off by the vessels metal construction.
> >
> I really like Marvin Paisner's guess!
>
> If all the hardware is brass or bronze, that would support his hypothesis.
>
> As I understand it, there are two sets of small holes, with the sets being
> at right angles to each other.  That also supports Marvin's hypothesis.
>
>
>


-- 
Kirk Eppler in Half Moon Bay, CA