xxxx Geo-Master triangle
Year: 1982

Unknown article number - Geo-Master triangle

This strange triangle ruler is quite a mystery.
Not sure exact use of it...but it seems to be some sort of typemeter with angles, ruling guide for typing or some other type of geometry tool.
Inside circle can be easily taken out.

Also the production and connection to Rotring remains unknown.

Rotring logo is not printed but added with a sticker with black logo. I have seen more then one piece like this so I don't think it is unofficial.

There are a lot of other writting on the ruler:
"GEO-MASTER
Monsterskyddad

DIVAB AB
NODINGE, SWEDEN

Copyright 1982. Tage Lindstrom, Tool design SBA"

So seems that it was produced in Sweden and distributed at some point by Rotring.


Let me know if you have any info about this.

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