Polerouter Date cal.69
UG was founded in 1894 as "Universal Watch" by Numa-Emile Descombes and
Ulysse Georges Perret for the "production of watch-cases, domes, watch
dials, movement, fitted boxes and packaging for watches". Descombes died at age 34 in 1897, and Louis-Edouard Berthoud joined Perret, briefly trading as Perret & Berthoud until Perret died in 1933. The name of "Universal Watch Co. was registered in 1934 and "Universal", in 1935.
Shortly after the inauguration of the new factory in Geneva in 1954, the model "Polarouter" (with a Cal.138SS Bumper movement), later on renamed to "Polerouter" in 1958, was launched. The watch became renowned for being used by the SAS pilots during their polar flights. The Polarouter/ Polerouter was designed by the late Gérald Genta at the youthful age of 24.
The movement used in the early Polarouter model was the cal.138 SS. It was introduced by UG in 1948, first as cal.138 with a subsidiary seconds and then with a central second as cal.138SS. The cal. 138 SS measures 28.2 mm in diameter and is 5.55 mm thick.
On the second of March 1955 Universal Genève patented the calibre 215 "Microtor", a new form of an automatic calibre with the rotor mass incorporated in the movement.
UG first introduced the micro-rotor movement in 1955 in the guise of cal.215 in the renamed " Polerouter ". This innovation was to create an automatic movement with a thinner profile. Interestingly, the Buren watch company was working on a similar concept around the same period.
The cal.215 was superseded by the cal.218 in 1960. As the winding mass is off axis, winding efficiency is decreased. This necessitated using a heavier winding mass and more efficient winding system.
Shortly after the inauguration of the new factory in Geneva in 1954, the model "Polarouter" (with a Cal.138SS Bumper movement), later on renamed to "Polerouter" in 1958, was launched. The watch became renowned for being used by the SAS pilots during their polar flights. The Polarouter/ Polerouter was designed by the late Gérald Genta at the youthful age of 24.
The movement used in the early Polarouter model was the cal.138 SS. It was introduced by UG in 1948, first as cal.138 with a subsidiary seconds and then with a central second as cal.138SS. The cal. 138 SS measures 28.2 mm in diameter and is 5.55 mm thick.
Cal.138 Polarouter
On the second of March 1955 Universal Genève patented the calibre 215 "Microtor", a new form of an automatic calibre with the rotor mass incorporated in the movement.
Cal.138
The cal.215 was superseded by the cal.218 in 1960. As the winding mass is off axis, winding efficiency is decreased. This necessitated using a heavier winding mass and more efficient winding system.
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