. Baltimore and Ohio employees magazine . Gunsights, illuminated, insure accuracy of aimin the dark. The need of luminating poisonbottles, so that they may stand out wam-ingly in the dark has been demonstrated toooften to need further dwelling on. Aninteresting Safety device is the safe com-bination whose dial is radium luminated, sothat no artificial light need be used for it. The industrial uses of radium luminousmaterial are many. Bolts that are neces-sarily attached to the dark under portionsof machines and equipment are beingtouched with dabs of this luminous materialwith a consequent gre
. Baltimore and Ohio employees magazine . Gunsights, illuminated, insure accuracy of aimin the dark. The need of luminating poisonbottles, so that they may stand out wam-ingly in the dark has been demonstrated toooften to need further dwelling on. Aninteresting Safety device is the safe com-bination whose dial is radium luminated, sothat no artificial light need be used for it. The industrial uses of radium luminousmaterial are many. Bolts that are neces-sarily attached to the dark under portionsof machines and equipment are beingtouched with dabs of this luminous materialwith a consequent great saving of mines where the carrying of oil lamps orthe placing of electric lighting equipment isnot feasible, radium has been found to be aboon to humanity. There are dark cornersin the dark underground channels whichminers must traverse, comers where dangerlurks—these are made safe through the un-varying luminosity of radium. The value of radium to mariners is com-mencing to be recognized. I^ot only the Send l^MiraiiK. EmbU Madtin• aiUreu A. Not one cent in advance far this combination 7-Window Pass Case, Card Case and Bill Fold WilJ show 7 regular size passes, identification cards,and photos, each under a separate transparent celluloidface protectinif it from dirt and wear. Also has gussetedpocltets for smaller curds and roomy billfold pocket inbick. Kailroad men tell me it is thi-handiest thinp theyever saw. Over 20,O0O of them now being carried. Your name and address (3 lines) andyour emblem or insignia (order, brother-hood, lodge—I have them all) engravedin 23K gold absolutely free. This workalone is worth $ of anybodys money. Case ia beautifully made of fine black seal crainsonuine leather. Strongly Eewed, neat and couvenlent. Size, 3 1-2x4 1-2 inches clostdUont send me a single pinny in advance. Just sendyour name and address on the coupon below with theemblem or insignia you want. I will sena you this wonderfu) pass case at once, ard when t
Size: 1755px × 1424px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookidbaltimoreohi, bookyear1920
