A rare example of a Hirtz Compass enclosed in its original 17 inch x 13 inch by 3 1/2-inch wooden box covered with oilcloth. On the top we find Gold lettering in French ” Establissements Gaiffe / Compas de Mr Le Medicin Principal Hirtz / pour la Recherche des projectiles”.
This device was used during the World War 1 together with X-Ray’s to locate bullets and other foreign objects in the human body. The instrument was set up to mimic the trajectory of the bullet together with its depth to give the surgeon an accurate position. The essential feature of the Hirtz compass is the possibility of adjustment of the movable legs that support the instrument so when resting on fixed marks on the body of the patient the foreign body will be at the center of the sphere a meridian arc of which is carried by the compass.
The set is complete and it includes many accessories to allow access to any part of the body.
And, as additional important plus, the original booklet with instructions and tables for its use + a letter from an Italian doctor, date 1937, stated the gift of this set (“I’ve had used it during the war…”) to the Nun Emiliana, Director of the hospital “San Camillo” in Treviso
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