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

They were also known to have had links with Charles Darwin

The plate is accompanied by a large brass spirit level with a flattened base so that it can be rested upon the plate to assist the use in creating a level platform for navigational observations

“The Property of Benskins Watford Brewery Co

For a short period the name Gilbert & Co was used and by 1806

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