| Cal-Scale HO #220 Air Brake Set 1890-1900 era |
| Cal-Scale HO #276 Air Hose - Frt. Car & Caboose |
| Cal-Scale HO #275 Passenger Air, Signal, Steam Lines |
| Cal-Scale HO #274 Passenger Air, Signal, Steam Lines |
| Cal-Scale HO Gauge Brass Air & Signal Hoses AH-320 |
| Cal-Scale HO #425 Nathan Diesel Air Horn 3-Chime K3 |
| Cal-Scale HO #2005 Steam Loco Air Pump Shield |
| Cal-Scale HO #272 Steam Loco Air Brake Set |
| Cal-Scale HO #428 Nathan Diesel Air Horn |
| Cal-Scale HO #368 Backhead Air Stand Modern Large/Brass |
| Cal-Scale HO #426 Nathan Diesel Air Horn 4 Chime |
| Cal-Scale HO #257 (11" Air Pump With Bracket)Brass |
| Cal-Scale HO #256 Steam Loco Air Compressor (Brass Cast |
| Cal-Scale HO #367 Steam Loco Air Brake Stands (Brass Ca |
| Cal-Scale HO #2006 Steam Loco Air Pump Shield |
| Cal-Scale HO Gauge Brass Air Ringer Bell BE-285 |
| Cal-Scale HO #266 Shield for Radiator and Air Pumps |
| Cal-Scale HO #273 Steam Loco Air Brake Set |
| Cal-Scale HO #300 "UC" Air Brake System |
| Cal-Scale HO #366 Steam Loco Air Brake Stands |
| Cal-Scale HO #355 Air Conditioning Receptacles |
| Cal-Scale HO #421 Nathan Air Horn 5 chime |
| Cal-Scale HO #349 Air Pump Front Mount w/Pipes |
| Cal-Scale HO #420 Nathan Diesel Air Horn 3 Chime |
| Cal-Scale HO #313 Air Brake Set ABD Modern |
| Cal-Scale HO #424 Nathan Diesel Air Horn 2-Chime K2 |
| Cal-Scale HO #347 Air Pump w/Strainer & Pipes |