NEGRETTI & ZAMBRA, THERMORAPH
Now this is very nice indeed, this is a thermograph by Negretti & Zambra .
This one is a real peach with an original pen and the precision of a cursive bi-metallic strip for the temperature sensing. The Gluck 8 day movement works well ticking and keeping time satisfactorily. All in all this represents a scarce opportunity to obtain one of these fine instruments for service, collection or even recasing in a custom wood and glass case - simply super in every way!