Tool LVDT
To make the coils fore the LVDT.
Take this tool first.
Secure the tool.
The slot should point upwards.
40 cm of wire in the first hole.
First winding the coil.
1 x go around.
Then you wind the coil 200 times.
Bend the wire. That it fits in the slot. And put some tape on the wire. That the wire can't jump away.
Put also a tape in the middle.
Thene turn the coil 180 that the flate site is outside.
Left with the machine. And wrap 1 x around.