I understand that a typical range is between 30 and 33. There is no rattling sound inside the instrument. I’ve also done a ziplock baggie test on it to show that the needle still moves. There are before and after photos of this.The item “Victorian Antique Barometer” is in sale since Wednesday, August 27, 2014. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “actingpurple” and is located in Hopkins, Minnesota. This item can only be shipped to United States.