Can someone identify these?

[Steve Weiss]

Steve : Forgot to mention that the Knot log pin has a hole in one end. 
If you look at your picture you can see the 1" ring clip that is thru that hole to keep it from coming out (until you remove that pin!).

I noticed that. I assume that is what Jim was referring to when he suggested attaching a safety wire?

Thanks for that tip. I guess I'll save the photo for reference.

[Ralph Masters]

One word of caution:  If you ever pull one of those for service do it when the admiral is not onboard.  They tend to get very excited when you pull it out and the water gushes in, if only for a second or two.

Ralph

[Steve Weiss]

One word of caution:  If you ever pull one of those for service do it when the admiral is not onboard.  They tend to get very excited when you pull it out and the water gushes in, if only for a second or two.

Ralph

Well, thanks for that but since I'm single I guess that won't be a problem. Nevertheless, I think I would be very careful pulling one of those out since I would probably get a bit excited if water started to gush in.

[Stu Jackson]

Steve,

www.dmimarine.com.

Good guys.

If you need them.

[Ron Hill]

Steve : FYI, I've never had a problem with either the Data Marine knot log speed or the depth finder from day ONE!!  I have sent my wind instrument to DMI for repair a few years back.
 
DMI are good guys (not cheap) and are the only people that I know of that can/will repair Data Marine instruments!!

A few thoughts!

[Steve Weiss]

Stu, Ron, thanks very much for the head's up on DMI Marine. Could be very useful, they're only a couple hours from me too.