с каждой стороны
• Semiradial compressors have horizontal double-acting cylinders on each (or either) side.
• The scale beam is graduated with 100 divisions (on) each side of the zero centre.
• The swivel type of milling head is normally arranged to tilt 45° (on) each side of the centre line.
Источник:
Русско-английский научно-технический словарь
на Gufo.me