Jason Clarke Antiques has dated this piece to the 1890s.
This unusual fifteen second glass sand timer measures just 6cms in length and has a 0.5cm diameter. For protection, it is encased in 7.
To remove the timer, a lid with twist catch and chain attachment is removed from one end.
Sadly no makers details with this lovely item but it is likely due to its size and portability that it was intended for medical use
Circa 1890
Jason Clarke Antiques has dated this piece to the 1890s.
You can view the stock and full dealer information on the Jason Clarke Antiques Profile Page