Late Victorian Cased Sausurre Hair Hygrometer by Poulenc Freres of Paris Antique R&J Beck Microscope This superior set contains seven

This superior set contains seven razors each engraved to the back edge of the blade with a different day of the week

Above the scale arc are provided Fitzroy type weather indications all complete with a very fine blue steel pointer and brass set knob and pointer for recording a particular reading

The set comprises of three walnut cased instruments

the youngest of the brothers continued to flourish in London

William Gilbert certainly became involved with Gabriel Wright in 1790 probably owing to the death of his Father and business partner

Late Victorian Cased Sausurre Hair Hygrometer by Poulenc Freres of Paris Antique R&J Beck Microscope This superior set contains sevenFor sale, a French late Victorian period cased Saussure type hair hygrometer by Poulenc Freres of Paris. Constructed around a lacquered brass rectangular frame with attached wall hanging loop, a piece of hair is clamped at the top with the clamp attached to a screw mechanism which allows for adjustment of tautness. The hair is suspended through the centre of the frame and similarly clamped to the base pointer mechanism which has fine balance