This is a unique gadget walking stick featuring a large brass handle, the top of which unscrews to reveal a hidden compartment. 

Inside the hidden compartment is a diamond-tipped glass cutter, stamped with the maker's: 
Sharratt & Newth 
Patent London 
Sharratt & Newth was a prominent British manufacturer of professional glass-cutting tools, established around 1830 in Clerkenwell, London.​ 

Ebonised shaft with a metal ferrule. 

A one-of-a-kind cane perfect for a collector or for use. 

Measurements: 
Length - 91cm 
Diameter of the top - 2.4cm 
Diameter of the shaft under the top - 1.7cm 
Glass cutter length - 18cm 
Total weight - 280g 
 
Very good condition with some oxidation to the metal.