This artificial leech is plated brass.  The plunger to the left is spring loaded to allow the creating of a vaccuum when depressed and the foot of the item is applied to the skin.  When the plunger is released the draw is created.  The right tube contains a spring driven blade that is released with the depression of the lever.  The item is marked as Kidston & Co Manufacturers, 18 Bishopsgate, London, Reg. Feb 11th 1850.
This artificial leech is plated brass.  The plunger to the left is spring loaded to allow the creating of a vaccuum when depressed and the foot of the item is applied to the skin.  When the plunger is released the draw is created.  The right tube contains a spring driven blade that is released with the depression of the lever.  The item is marked as Kidston & Co Manufacturers, 18 Bishopsgate, London, Reg. Feb 11th 1850.
This artificial leech is plated brass.  The plunger to the left is spring loaded to allow the creating of a vaccuum when depressed and the foot of the item is applied to the skin.  When the plunger is released the draw is created.  The right tube contains a spring driven blade that is released with the depression of the lever.  The item is marked as Kidston & Co Manufacturers, 18 Bishopsgate, London, Reg. Feb 11th 1850.
Kidston artificial leech
This artificial leech is plated brass.  The plunger to the left is spring loaded to allow the creating of a vaccuum when depressed and the foot of the item is applied to the skin.  When the plunger is released the draw is created.  The right tube contains a spring driven blade that is released with the depression of the lever.  The item is marked as Kidston & Co Manufacturers, 18 Bishopsgate, London, Reg. Feb 11th 1850.
Cutting blades of the leech