Labels:cutaway | lathe | paper | sky | tennis racket OCR: 30 drill rod close fitting coated with piston ros and dowel strohed with robber diaphragm rosined stre ched end chamo,s of tobe and tied cork dust lycopodium 40 watt fluorescent lamp with enas cut off and phosphor removed cardboard horn lovd Ispcaker coatcd stroked diaphraom stretchea over chamois tube cnds card board loudspcaker