Screwdrivers

A working set runs from roughly 0.50mm to 3.00mm. Most bench work happens between 0.80mm and 1.60mm — case back screws, movement screws and bracelet screws. Buying a 9- or 10-piece Bergeon or Horotec set covers the range and gives you a stand that keeps blades in order.

The rotating cap lets your index finger apply steady downward pressure while your thumb and middle finger turn the barrel. That separation is what keeps the blade seated in the slot instead of camming out and scarring the movement plate.

Whenever the tip rounds over or chips — a dull blade is the single most common cause of slipped screwdrivers and scratched plates. Both Bergeon and Horotec sell sharpening fixtures that hold the blade at the correct angle, and spare blades are cheap enough to keep on hand.