A Schiotz tonometer in case consisting of the tonometer itself (a) which consists of a T shaped top with graduated numbers going from 0 to 15 on the beam; at the base of the T there is a needle which moves back and forth along the measurements on the T depending on the pressure exerted on a concaveā¦
A Schiotz tonometer in case consisting of the tonometer itself (a) which consists of a T shaped top with graduated numbers going from 0 to 15 on the beam; at the base of the T there is a needle which moves back and forth along the measurements on the T depending on the pressure exerted on a concave dome at the base; there is also a handle extending out from each side of the device; there is also a small metal calibration device which is in the shape of a short cylinder with a domed top; this device is used to calibrate the needle to zero; the case (c) is made of out and is coated in think black leather and leatherette and is lined with green velvet and beige fabric inside; there is a compartment in the case for another piece, but it is not present.
Number Of Parts
3
Part Names
a - tonometer - Size: Length 11.9 cm x Width 4.4 cm x Depth 2.3 cm
b - calibration device - Size: Depth 0.8 cm x Diam. 1.0 cm
c - case - Size: Length 13.4 cm x Width 6.0 cm x Depth 3.3 cm
Provenance
Owned by Dr. J. A. Stewart, Queen's University Faculty of Medicine Class of 1923; Dr. Stewart gave it to Dr. Roseborough.
"[illeg.] RADLE - SCHIOTZ - TONOMETER" on the box lid; "Made By // F. A. HARDY & CO. // Chicago - New York" printed on the fabric inside the box; "F.A. HARDY & CO. // 298" engraved on the tonometer on the back
Permanent Location
Storage Room 0010
0010-E4-7
Condition Remarks
The tonometer is like new; the leather on the case is extremely damaged.
Reference Types
Internet
Reference Comments
Internet: "National Library of Medicine"; Internet: "Professional Information Page for Veterinarians"
Research Facts
Used to measure intraocular pressure.
Tonometer also known as an Ophthalmodynamometer; used to measure the pressure on the blood vessels in the retinal vessels of the eye (intraocular pressure).