Technical Drawing Instrument 1960's

Lead compass with knee joint and extendable leg, plus an interchangeable divider point

In the picture the extendable leg has not been deployed

Manufactured by 'Mechanico Progresso' in Portugal

These came straight from the UK distributor in the late 1970's and were made in the early to late 1960's. They have never been used.

Please see all pictures for full condition.