"When you need it most"... The basic motto for what to take when exploring. Traversing vast continents and oceans on voyages of discovery, seemingly simple instruments like this compass-magnifier were used to navigate.
The expedition scientist using magnifiers to study new species of plants, insects, animals. Twin-function compass and magnifying glass original from a collection of early scientific instruments.
This pocket magnifying glass with compass is hand-made of brass in antique
finish. (magnifies 6x)