Holborn Surgical Instrument Co
Holborn Surgical Instrument Co Ltd. of 15 Charterhouse Street, Holborn Circus, London, EC1. Telephone: Holborn 2267. Cables: "Amputation, Smith, London"; of 26 Thavies Inn, London, E.C.1. (1938)
c1870-1900 Thudichum's nasal speculum. Brass nasal speculum made by the Holborn Surgical Instrument Co, based on the design of John Thudichum (1829-1901). A speculum is an instrument designed to allow a doctor to view the inside of a passage or cavity of the body. 
1921 Advert on this page.
1930 Patent - Improvements in surgical, dental and like operating tables. 
1947 Listed Exhibitor - British Industries Fair. Manufacturers of Veterinary and Surgical Instruments, Hospital Furniture. Specialties - Veterinary:- Bloodless Castrators, Ear Marking Tags, Tattooing Outfits, Meat Marking Machines, Artificial Insemination Equipment. Surgical:- Midwifery Forceps, Needleholders, Plaster Shears, Operation Theatre Equipment. (Olympia, Ground Floor, Stand No. E1789) 
1955 Patent - Improvements in or relating to instruments for marking pigs or other animals for identification purposes.