Any wooden window frame with a single glass is easy to turn into a double, having received a kind of glazing is not worse than common now brand.
This will require a brace or composite rod-the glass bead and a slightly larger format than is setup in the window so that you can lay on the frame and press with rail, bothering and seal with a rubber strip or putty.
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VOLTAGE ± 5%
If during the day to measure the mains voltage, the voltmeter each time will be different. This is due to you can enable or disable individual power consumers, changing mode of operation...
I-15bis
The biplane I-15 upper wing type "Chaika" was a further development of fighter I-5. The first flight of an aircraft equipped with the engine SGR-1820 F-Z of the company "Wright-Cyclone",...
