When you do not have a suitable spanner to Unscrew the hex-head bolt will help out any screw with two nuts — preferably square-shaped.
Recommend to read
THERE IS A WATER PUMP WORKS, DRIED OUT, WAIT
The proposed device is designed for automatic control of vibrionaceae Malysh, Rucheek and the like for operation in boreholes (wells) with a low flow rate of water or for periodic...
THE DROP DOWN BOARD
In electronic equipment with high density have more difficulties to get to various units and parts when setting up or replacing them during the renovation. Therefore, in the serial...