Wednesday, October 14, 2020

Cromna self-adjusting wrenches


 This is a set of good, heavy, well made adjustable wrenches, made under the name Chromna, each specified in a range of metric sizes. Beautiful things, there doesn't seem to be much information that I can find online, other than the fact they are made in Denmark and licensed to manufacturers in several countries.  Patent 69670 is part of the forged-in text on the handle.

3 comments:

Dave said...

According to this book, that's a complete set of Cromna tools right there.

https://books.google.com/books?id=z1FMDQAAQBAJ&pg=PT512&lpg=PT512&dq=cromna+tools&source=bl&ots=m3Prh444tI&sig=ACfU3U2U_gOO1ywilgSx0xI3Ugl0k8yHJw&hl=en&sa=X&ved=2ahUKEwjf9-rX0LXsAhWFVs0KHTOQC7I4HhDoATAEegQIAhAC#v=onepage&q=cromna%20tools&f=false

Mister G said...

Thnaks! I've been meaning to buy that book.

Dave said...

The dovetailed lower jaw is pretty impressive, but I bet expensive to produce. I wonder how long they lasted in hard use?

It's funny the things that toolmakers of that era did to get around other maker's patents.