DuRoWe 202
Description
From the 1930s dates ones of the earliest movements of the DuRoWe, the DuRoWe 202, which is, according to some sources, the military version of the DuRoWe 410.
It has got the standard diameter of 10 1/2 lignes and uses 15 jewels, some of them, probably due to war, transparent instead of ruby-red.
base plate
Even though the transparent rubies give an other impression, all important bearings contain rubies.
Only minute wheel and mainspring barrel use metal bearings, but that’s not a problem, since they rotate slowly and so don’t have friction problems.
gear train
The gear train uses the classical construction with mainspring barrel, directly driven center minute wheel, third wheel, decentral seconds wheel at 6 o’clock and finally the very filigree steel escape wheel. The latter is beared under an own cock.
side view of the gear train
The screw balance of the DuRoWe is of course not yet shock protected.
It beats with 18000 A/h, regulates a pallet lever movement of
swiss type and can be adjusted with a long regulator arm.
Durowe 202: Dial side
On the dial side, you see the yoke winding system, whose setting lever spring war “repaired” a bit shirt-sleeved.
In the lab
Timegrapher result
The pretty poor rates are probably caused by the age and wear of this well used movement.| horizontal positions | |||
|---|---|---|---|
| dial up | +21 s/d | 214° | 0.9ms |
| dial down | +3 s/d | 196° | 0.9ms |
| vertical positions | |||
| crown right (12 up) | -10 s/d | 184° | 1.1ms |
| crown up (3 up) | -40 s/d | 175° | 1.5ms |
| crown left (6 up) | -50 s/d | 193° | 1.1ms |
| crown down (9 up) | +42 s/d | 173° | 1.0ms |
Technical data
| Manufacturer: | DuRoWe |
| Caliber: | 202 |
| Size: | 10 1/2''' (measured: 23,3mm) |
| A/h: | 18000 |
| Number of jewels: | 15 |
| Escapement: | Pallet lever |
| Balance types: |
Nickel screw balance (two legs) |
| Shock protection(s): |
none |
| Balance bearing / direction hairspring: | Clockwise |
| Moveable stud: | no |
| Adjust mechanism: | Long regulator arm |
| Construction: |
|
| Construction type: | solid construction |
| Winding mechanism: | yoke winding system |
| Setting lever spring: | 2 hole(s) |
| Features: |
|
| References: |
Feilner: 133 Jacob: 1942 13 11046 |
| Inventory number: | 21015 |
Usage gallery
anonymous gents military watch (case missing)