What is a mercury stick barometer?

The earliest types of barometers using mercury were invented in 1643 by Evangalista Torricelli.  Robert Boyle, during his travels to Europe brought back this "new idea" to England in around1660.   The first barometers normally found will be around 1680 as before that this new invention would have to be made for you, after you had described it to a maker, probably a clock maker or someone who could obtain cabinet work and engraved plates, as well as glass tubes and mercury.  These early ones were of what is known as an open cistern type; this is a glass tube filled with mercury when positioned in the house and inverted into a container of mercury.  They were not at all transportable!.  However, by 1695 Daniel Quare had invented and received a Royal patent for a more transportable type of barometer, which enclosed the end of the tube and made matters a lot easier.  Some barometers have boxwood reservoirs on the end and are normally transportable; others have a turned up glass tube, called ball pediment tubes.  Some later barometers, such as the Admiral Fitzroy, have a patented plugging device.  All these types of barometers read directly from the top of the level of mercury in the top part of the tube against some type of register plate; early ones often in silvered brass, later ones in ivory, paper, enamel or glass.  We can also include Admiral Fitzroy barometers amongst the stick barometers. Admiral Fitzroy barometers are often in rectangular glass fronted cases as well as Polytechnic barometers, which have a dial at the top, through use of a little adjusting key predictions for summer & winter can often be made.  A true Admiral Fitzroy barometer is actually the Storm barometer, which is normally an oak case with Admiral Fitzroy Storm Barometer written at the top and his weather words, which he personally introduced & organised the sending around the country, the first 13 of which produced the first synoptic charts when the information was telegraphed back to his London headquarters at the Meteorological Department of the Board of Trade.