OO9 is 4mm to the foot scale (that is OO or 1/76) but using 9mm track gauge (the same size as N gauge). This is...
If you are building or own a model railway layout, then you have likely heard the word solenoid, a lot! and that is because modellers use them, a lot!A solenoid is a coil of wire which acts as a magnet when an electrical charge is applied. The...