Antique London 1709 Brass Mother of Pearl Fahrenheit/Reaumur Desk Thermometer

Description

You are bidding on an antique London 1709 desk thermometer with a mother of pearl face set in decorative brass with a marble base.  The mother of pearl face appears to be hand painted and has an etched floral design.  The thermometer shows both the Fahrenheit and Reaumur temperature scales.  The thermometer measures approximately 7 1/4" tall.  The marble base measures approximately 5" wide and 4" from front to back.  The oval shaped mother of pearl face measures approximately 3 1/8" tall and 2 1/4" wide. The thermometer is in good, antique condition.  The etched painted floral design on the face shows loss of paint.  The brass shows some surface wear due to age.  The thermometer is attached to a marble base has a crack and appears to have been repaired (see photo)  The screws and nuts holding the brass on the marble base are rusty and need to be tightened. Please see photos for more information regarding condition.  This is a very unique brass and mother of pearl
London 1709 desk thermometer that is in overall good condition for its age.
Antique L. E. Knott Apparatus Company Boston Scientific Instrument With Cast Iron Base.
Nice condition , you are buying as is.
I am not familiar with these items I have listed.
I do not know what this is for and cannot guarantee it works or is complete.
See pictures for description and ask questions before bidding.
See my other auctions for more items.