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Crain's Scale and Gauge Encyclopedia

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Crain's Scale / Gauge Encyclopedia
26 Scale Name:  9 mm Scale        
  Scale Ratio:  1:33.9    
  Alternate Names:  9 mm = 1 foot              
     Represented    Scale       Model Track Gauge Error  Track
  Ser #     Gauge  Inches Ratio   In/ft  mm/ft       Inches           mm %  Used
  Correct Gauge:      
26 604  4ft 8.5in 56.5 33.9 0.354 9.0 1.667   42.33   0.0  
26 605  3.5 Foot 42 33.9 0.354 9.0 1.239   31.47   0.0  
26 606  Meter 39.4 33.9 0.354 9.0 1.162   29.52   0.0  
26 607  3 Foot 36 33.9 0.354 9.0 1.062   26.97   0.0  
26 608  2.5 Foot 30 33.9 0.354 9.0 0.885   22.48   0.0  
26 609  2 Foot 24 33.9 0.354 9.0 0.708   17.98   0.0  
26 610  15 Inch 15 33.9 0.354 9.0 0.442   11.24   0.0  
  Commonly Used Gauges    
26 611  1-3/4" Ga 56.5 33.9 0.354 9.0 1.766 1.820 44.86 46.23 6.0   Ga.1
26 612  45 mm Gauge 56.5 33.9 0.354 9.0 1.766 1.820 44.86 46.23 6.0   Ga.1
26 613  Gauge 1 56.5 33.9 0.354 9.0 1.766 1.820 44.86 46.23 6.0   Ga.1
26 614  1-1/4" Ga 42 33.9 0.354 9.0 1.250 1.285 31.75 32.64 0.9  Ostd 
26 615  O Ga Contl 42 33.9 0.354 9.0 1.260   32.00   1.7  
26 616  O Ga USA 42 33.9 0.354 9.0 1.250 1.285 31.75 32.64 0.9  Ostd 
26 617  Gauge 0 36 33.9 0.354 9.0 1.125   28.58   5.9  Ga.0
26 618  S Gauge 30 33.9 0.354 9.0 0.875 0.898 22.23 22.81 -1.1  Sstd
26 619  18 mm Gauge 24 33.9 0.354 9.0 0.750   19.05   5.9  
26 620  HO Gauge 24 33.9 0.354 9.0 0.649 0.672 16.48 17.07 -8.3  HOstd
               
Only a few mentions of this scale appear in the literature. Used in New  
Zealand to represent 42" gauge on O Gauge track.  
   
Crain's Scale / Gauge Encyclopedia
27 Scale Name:  1:35 Scale        
  Scale Ratio:  1:35    
  Alternate Names:  None                  
     Represented    Scale       Model Track Gauge Error  Track
  Ser #     Gauge  Inches Ratio   In/ft  mm/ft       Inches           mm %  Used
  Correct Gauge:      
27 621  4ft 8.5in 56.5 35 0.343 8.71 1.614   41.00   0.0  
27 622  3.5 Foot 42 35 0.343 8.71 1.200   30.48   0.0  
27 623  Meter 39.4 35 0.343 8.71 1.126   28.59   0.0  
27 624  3 Foot 36 35 0.343 8.71 1.029   26.13   0.0  
27 625  2.5 Foot 30 35 0.343 8.71 0.857   21.77   0.0  
27 626  2 Foot 24 35 0.343 8.71 0.686   17.42   0.0  
27 627  15 Inch 15 35 0.343 8.71 0.429   10.89   0.0  
  Commonly Used Gauges    
27 628  1-3/4" Ga 56.5 35 0.343 8.71 1.766 1.820 44.86 46.23 9.4  Ga.1
27 629  45 mm Gauge 56.5 35 0.343 8.71 1.766 1.820 44.86 46.23 9.4  Ga.1
27 630  Gauge 1 56.5 35 0.343 8.71 1.766 1.820 44.86 46.23 9.4  Ga.1
27 631  1-1/4" Ga 42 35 0.343 8.71 1.250 1.285 31.75 32.64 4.2  Ostd 
27 632  O Ga Contl 42 35 0.343 8.71 1.260   32.00   5.0  
27 633  O Ga USA 42 35 0.343 8.71 1.250 1.285 31.75 32.64 4.2  Ostd 
27 634  Gauge 0 36 35 0.343 8.71 1.125   28.58   9.4  Ga.0
27 635  S Gauge 30 35 0.343 8.71 0.875 0.898 22.23 22.81 2.1 S std
27 636  HO Gauge 24 35 0.343 8.71 0.649 0.672 16.48 17.07 -5.4  HOstd
               
Only a few mentions of this scale appear in the literature. Used in France  
to represent 24" gauge on HO Gauge track. 1:35 scale is used  for military models.  
   
Crain's Scale / Gauge Encyclopedia
28 Scale Name:  8 mm Scale        
  Scale Ratio:  1:38.1 5/16 Inch Scale  
  Alternate Names:  8 mm = 1 foot              
     Represented    Scale       Model Track Gauge Error  Track
  Ser #     Gauge  Inches Ratio   In/ft  mm/ft       Inches           mm %  Used
  Correct Gauge:      
28 637  4ft 8.5in 56.5 38.1 0.315 8.00 1.483   37.67   0.0  
28 638  Meter 39.4 38.1 0.315 8.00 1.034   26.27   0.0  
28 639  3 Foot 36 38.1 0.315 8.00 0.945   24.00   0.0  
28 640  2.5 Foot 30 38.1 0.315 8.00 0.787   20.00   0.0  
28 641  2 Foot 24 38.1 0.315 8.00 0.630   16.00   0.0  
28 642  15 Inch 15 38.1 0.315 8.00 0.394   10.00   0.0  
  Commonly Used Gauges  
28 643  1-3/4" Ga 66 38.1 0.315 8.00 1.766 1.820 44.86 46.23 1.9  Ga.1
28 644  45 mm Gauge 66 38.1 0.315 8.00 1.766 1.820 44.86 46.23 1.9  Ga.1
28 645  Gauge 1 66 38.1 0.315 8.00 1.766 1.820 44.86 46.23 1.9  Ga.1
28 646  1-1/4" Ga 48 38.1 0.315 8.00 1.250 1.285 31.75 32.64 -0.8  Ostd 
28 647  O Ga USA 48 38.1 0.315 8.00 1.250 1.285 31.75 32.64 -0.8  Ostd 
28 648  S Gauge 36 38.1 0.315 8.00 0.875 0.898 22.23 22.81 -7.4  Sstd
28 649  OO Gauge 30 38.1 0.315 8.00 0.750 0.772 19.05 19.61 -4.7  OOstd
28 650   5/16n2 Gauge 24 38.1 0.315 8.00 0.649 0.672 16.48 17.07 3.0  HOstd
28 651  HO Gauge 24 38.1 0.315 8.00 0.649 0.672 16.48 17.07 3.0  HOstd
   
Only a few mentions of this scale appear in the literature.  
   
Crain's Scale / Gauge Encyclopedia
29 Scale Name:  7 mm Scale        
  Scale Ratio:  1:43.5    
  Alternate Names:  7 mm = 1 foot British O Scale  Continental 0 Scale  
       Scale 7   European 0 Scale  Zero Scale    
       Number 0F Scale (Zero-Eff)     Naught Scale    
     Represented    Scale       Model Track Gauge Error  Track
  Ser #     Gauge  Inches Ratio   In/ft  mm/ft       Inches           mm %  Used
  Correct Gauge:      
29 652  4ft 8.5in 56.5 43.5 0.276 7.0 1.299   32.99   0.0  
29 653  Meter 39.4 43.5 0.276 7.0 0.906   23.01   0.0  
29 654  3 Foot 36 43.5 0.276 7.0 0.828   21.02   0.0  
29 655  2.5 Foot 30 43.5 0.276 7.0 0.690   17.52   0.0  
29 656  2 Foot 24 43.5 0.276 7.0 0.552   14.01   0.0  
29 657  15 Inch 15 43.5 0.276 7.0 0.345   8.76   0.0  
  Commonly Used Gauges    
29 658  Scale 7 56.5 43.5 0.276 7.0 1.299   32.99   0.0  
29 659  0 Gauge/S7 56.5 43.5 0.276 7.0 1.299   32.99   0.0  
29 660  Fine 7 Ga 56.5 43.5 0.276 7.0 1.260   32.00   -3.0  
29 661  0 Ga Brit 56.5 43.5 0.276 7.0 1.260   32.00   -3.0  
29 662  0 Ga Contl 56.5 43.5 0.276 7.0 1.260   32.00   -3.0  
29 663  SM32 Gauge 56.5 43.5 0.276 7.0 1.260   32.00   -3.0  
29 664  O Ga USA 56.5 43.5 0.276 7.0 1.250 1.285 31.75 32.64 -3.8  Ostd 
29 665  1-1/4" Ga 56.5 43.5 0.276 7.0 1.250 1.285 31.75 32.64 -3.8  Ostd 
29 666  No.0F Ga 56.5 43.5 0.276 7.0 1.250 1.285 31.75 32.64 -3.8  Ostd 
29 667  43.5 / 32 Ga 56.5 43.5 0.276 7.0 1.250 1.285 31.75 32.64 -3.8  Ostd 
29 668  Gauge 0 56.5 43.5 0.276 7.0 1.125   28.58   ####  Ga.0
29 669  0n3.5 Ga 42 43.5 0.276 7.0 0.875 0.898 22.23 22.81 -9.4  Sstd
29 670  0m Gauge 39.4 43.5 0.276 7.0 0.875 0.898 22.23 22.81 -3.4  Sstd
29 671  43.5 / 22.5 Ga 39.4 43.5 0.276 7.0 0.875 0.898 22.23 22.81 -3.4  Sstd
29 672  S Gauge 39.4 43.5 0.276 7.0 0.875 0.898 22.23 22.81 -3.4  Sstd
29 673  0n3 Ga 36 43.5 0.276 7.0 0.875 0.898 22.23 22.81 5.7  Sstd
29 674  S Gauge 36 43.5 0.276 7.0 0.875 0.898 22.23 22.81 5.7  Sstd
29 675  OOn Gauge 36 43.5 0.276 7.0 0.750 0.772 19.05 19.61 -9.4  OOstd
29 676  OO Gauge 36 43.5 0.276 7.0 0.750 0.772 19.05 19.61 -9.4  OOstd
29 677  0n2.5 Ga 30 43.5 0.276 7.0 0.689   17.50   -0.1  
29 678  HO Gauge 30 43.5 0.276 7.0 0.649 0.672 16.48 17.07 -5.9  HOstd
29 679  O-16.5 Ga 30 43.5 0.276 7.0 0.649 0.672 16.48 17.07 -5.9  HOstd
29 680  Oe16.5 Ga 30 43.5 0.276 7.0 0.649 0.672 16.48 17.07 -5.9  HOstd
29 681  OOn Gauge 30 43.5 0.276 7.0 0.750 0.772 19.05 19.61 8.7  OOstd
29 682  0m750 Ga 29.5 43.5 0.276 7.0 0.649 0.672 16.48 17.07 -4.3  HOstd
29 683  0e Gauge 29.5 43.5 0.276 7.0 0.649 0.672 16.48 17.07