They also somewhat resist the effects of SCP-012. The night vision goggles on the 'fine' setting will give you night vision goggles that are tinted red, and do not require batteries to operate. You can put a Mastercard in on the 'Fine' setting to get a Level 2 keycard again. A level 4 card, however, will guarantee you a level 5 keycard when on the Fine setting and the Safe difficulty. There's a 1 in 10 chance of getting a Level 4 from a Level 3 when on Fine, otherwise you'll get a Mastercard, which is basically useless.
A level 2 keycard, on the Safe difficulty, will guarantee you a level 3 keycard on the Fine setting. All three of these reduce bullet damage from guards. A ballistics vest on Fine will get you a Heavy, and on Very Fine a Bulky Ballistics Vest.
A gas mask on either Fine or Very Fine will get you a Super Gas Mask, that allows you almost unlimited Sprint, and Sprint will regenerate back much more quickly. The only settings you want to use are 'Fine' and 'Very Fine'.
