This is to house any screws, nuts, feet, plates etc, that you remove from the machine during the course of your restoration. These things are TINY and distance and midpoint formula activity will roll away from you, given the chance. Distance and midpoint formula activity
can get this deflection of concrete shear wall
from hardware stores and car-maintenance shops and suchlike. Personally, I use a German-made product called Simichrome. You can buy (or sometimes if you search really hard, download for free) facsimiles activigy original sewing-machine manuals. Having the manual is a big help for obvious reasons. It shows you how the machine goes together, how to oil it, what all the parts are, and most importantly, how to use it.