6.1 Distinct Scale Sets

The top five most common scale sets in the Collection are:

Front Scale Number of Rules
A [ B C ] D 18
A [ B CI C ] D K 18
LL01 LL02 LL03 [ T ST S C ] D LL3 LL2 LL1 8
LL02 LL03 DF [ CF CIF CI C ] D LL3 LL2 7
DF [ CF CIF C ] D 6
Back Scale Number of Rules
[ S L T ] 52
40
LL0 A [ B S T C ] LL3 LL2 LL1 8
LL0 LL00 K DF [ CF CIF CI C ] D R1 R2 L 8
[ S ST T ] 7

Below is a list of the various scales found on the rules of the Collection.

##   [1] 1:1e6         1:25          1:5e5         2PI           A            
##   [6] Ab            Addiator      ApexAngDeg    ApexAngMils   Area         
##  [11] B             B&SGauge      BI            BoardFeet     Br-B''       
##  [16] C             C'            C0            C1            C2           
##  [21] C3            C4            C5            C50           C6           
##  [26] cel           CF            CF/m          CF/M          CG           
##  [31] CH1           CH2           CI            CIF           cm           
##  [36] conversions   CS            CT            CurrRatings   Cv           
##  [41] D             D'            D/LL0         D1            D2           
##  [46] D50           db            dBvi          dBw           dC           
##  [51] defl          dens          dF            DF            DF/m         
##  [56] DF/M          DI            diam          dK            DLL          
##  [61] Dose/Rate     dP            drill_thread  E             eff          
##  [66] Es            F             far           Fcs           frac         
##  [71] Freq          fx            gallons       GasTemp       GasVlvSize1  
##  [76] GasVlvSize2   Gtheta        H             H2            H3           
##  [81] Hp            in            in/mm         ISd           ITd          
##  [86] K             K'            L             Lambda        LC           
##  [91] len           length        LiqVlvSize1   LiqVlvSize2   LL           
##  [96] LL0           LL00          LL01          LL01,         LL02         
## [101] LL02,         LL03          LL1           LL1-          LL1+         
## [106] LL2           LL2-          LL2+          LL3           LL3-         
## [111] LL3+          Ln            Ln-0          Ln-1          Ln-2         
## [116] Ln-3          Ln0           Ln01          Ln02          Ln03         
## [121] Ln1           Ln2           Ln3           load          Lr           
## [126] M1            M2            N01           N02           N03          
## [131] N04           N1            N2            N3            N4           
## [136] Nspr          OppAngDeg     OppAngMils    over/under    P            
## [141] P'            P1            P2            P3            PC           
## [146] PI            pica          proof         Ps            Pt           
## [151] Q             Q'            Q]            R             R1           
## [156] R2            R31           R32           R33           rad          
## [161] reactance     Rtheta        S             S1            S2           
## [166] S3            Sd            Sh1           SH1           Sh2          
## [171] SH2           shear         shillings/gal SI            SI1          
## [176] SI2           Size          SpGr          Sq1           Sq2          
## [181] Sr            SRT           ST            StartExp      Stheta       
## [186] StmVlvSize1   StmVlvSize2   strength      SuperHeat     T            
## [191] T1            T2            T3            Td            Th           
## [196] TH            theta         theta1        theta2        theta3       
## [201] thick         thk           TI            TI1           TI2          
## [206] Time          Tr1           Tr2           tw            V            
## [211] V1            V2            Viscosity     volt          W1           
## [216] W1'           W2            W2'           wd            wgt          
## [221] width         x             X             Xc            XL           
## [226] xsec

6.1.1 Front Scales

The following list contains all of the distinct scale sets found in the Collection on the front of the rules.

##   [1]  cm /| K A [ B C ] D L || in                                                 
##   [2]  cm T1 T2 A [ B BI CI C ] D P S in                                           
##   [3]  in /| A [ Br-B'' C ] D || cm                                                
##   [4]  LL0 LL00 K DF [ CF CIF CI C ] D R1 R2 L                                     
##   [5] 1:1e6 || S A [ B S T C ] D T || 1:5e5                                        
##   [6] A [ B ] C                                                                    
##   [7] A [ B C ] D                                                                  
##   [8] A [ B CI C ] D                                                               
##   [9] A [ B CI C ] D K                                                             
##  [10] A [ B CI C ] D K                                                             
##  [11] A [ B P L C ] C' P                                                           
##  [12] A [ B S C ] D                                                                
##  [13] A [ B T ST S ] D K                                                           
##  [14] A C                                                                          
##  [15] A DF [ CF CI C ] D K                                                         
##  [16] A DF [ CF CI C ] D L                                                         
##  [17] C                                                                            
##  [18] C C1 C2 C3 C4 C5 C6                                                          
##  [19] C CI A K L LL3 LL2 LL1 LL0 Ab frac drill_thread in/mm                        
##  [20] C CI L A LL Ab frac drill_thread in/mm                                       
##  [21] C0 C                                                                         
##  [22] cm /| A [ B CI C ] D                                                         
##  [23] cm /| A [ B CI C ] D K || in                                                 
##  [24] cm /| K A [ B BI CI C ] D P S T                                              
##  [25] cm /| K A [ B CI C ] D L |\\ 1:25                                            
##  [26] cm /| K A [ B CI C ] D L || 1:25                                             
##  [27] cm /| K A [ B CI C ] D L || cm                                               
##  [28] cm /| K A [ B CI C ] D L || cm < cm >                                        
##  [29] cm /| LL2 A [ B CI C ] D LL3 |\\ in                                          
##  [30] cm /| LL2 A [ B CI C ] D LL3 || in < eff volt >                              
##  [31] cm || A [ B ISd ITd Td Sd C ] D L || in                                      
##  [32] cm L /| K A B CI C ] D P || S T                                              
##  [33] D [ C  pica ] pica                                                           
##  [34] D [ C ]                                                                      
##  [35] D [ C C' ] D'                                                                
##  [36] D [ C CI A K ]                                                               
##  [37] D [ C L ]                                                                    
##  [38] D [ C Size ] Area                                                            
##  [39] DF [ CF C ] D                                                                
##  [40] DF [ CF CI C ] D                                                             
##  [41] DF [ CF CIF C ] D                                                            
##  [42] DF [ CF CIF CI C ] D L                                                       
##  [43] DF [ CF CIF CI C ] D L K                                                     
##  [44] Dose/Rate Time StartExp                                                      
##  [45] in /| A [ B C ] D                                                            
##  [46] in /| A [ B C ] D || B&SGauge < CurrRatings >                                
##  [47] in /| A [ B C ] D || cm                                                      
##  [48] in /| A [ B C ] D || cm < cm >                                               
##  [49] in /| A [ B CI C ] D || K                                                    
##  [50] in /| A [ B CI C ] D K |\\ cm                                                
##  [51] in /| A [ B CI C ] D K || cm                                                 
##  [52] in /| A [ B CI C ] D K || cm                                                 
##  [53] in /| A [ B R C ] D || E                                                     
##  [54] in /| A [ Br-B'' C ] D || K                                                  
##  [55] in /| A DF [ CF CI C ] D K || cm                                             
##  [56] in /| DF [ CF CI C ] D || cm                                                 
##  [57] in /| K A [ B CI C ] D L                                                     
##  [58] in /| L K A [ B CI C ] D P S T                                               
##  [59] in || D [ C CI L A S T K ] || cm                                             
##  [60] K A [ B CI C ] D                                                             
##  [61] K A [ B S CI T C ] D L                                                       
##  [62] K A [ B S T C ] D DI                                                         
##  [63] K A [ B ST T S C ] D DI                                                      
##  [64] K A [ B T S CI C ] D L                                                       
##  [65] K A D [ C CI CF S CS ST T CT B L ]                                           
##  [66] K D [ C B ] A LL S T                                                         
##  [67] K D A L [ C B CI ]                                                           
##  [68] K DF [ CF CI C ] D A                                                         
##  [69] K DF [ CF CIF CI C ] D L                                                     
##  [70] K S A [ B CI C ] D T L                                                       
##  [71] K T1 T2 DF [ CF CIF CI C ] D S ST P                                          
##  [72] L [ C F ] XL X dBvi dBw                                                      
##  [73] L A DF [ CF CIF CI C ] D LL3 LL2 LL1                                         
##  [74] L K A [ B CI C ] D LL1 LL2 LL3                                               
##  [75] L K A [ B CI C ] D T Gtheta                                                  
##  [76] L K DF [ CF CIF CI C ] D x theta                                             
##  [77] L LL0 DF [ CF B CI C ] D LL3 LL2                                             
##  [78] L LL1 DF [ CF CIF CI C ] D LL3 LL2                                           
##  [79] LC A [ B T ST S ] D DI                                                       
##  [80] LL0 LL00 A [ B ST T S C ] D K                                                
##  [81] LL0 LL00 A [ B T ST S ] D K                                                  
##  [82] LL0 LL00 K DF [ CF CIF CI C ] D R1 R2 L                                      
##  [83] LL00 K A DF [ CF CIF CI C ] D R1 R2 LL0                                      
##  [84] LL01 LL02 LL03 [ T ST S C ] D LL3 LL2 LL1                                    
##  [85] LL01 LL02 LL03 DF [ CF CIF CI C ] D LL3 LL2 LL1                              
##  [86] LL01 LL02 LL03 DF [ CF CIF L CI C ] D LL3 LL2 LL1                            
##  [87] LL02 LL03 DF [ CF CIF CI C ] D LL3 LL2                                       
##  [88] LL02 LL03 DF [ CF CIF L CI C ] D LL3 LL2                                     
##  [89] LL1 A [ B T ST S C ] D DI K                                                  
##  [90] LL1 LL01 A [ B ST T S C ] D DI K                                             
##  [91] LL1 LL01 A [ B T ST S C ] D DI K                                             
##  [92] LL1+ LL1- A [ B ST T S C ] D DI K                                            
##  [93] Ln01 Ln02 Ln03 DF [ CF CIF H2 H3 CI C ] D Ln3 Ln2 Ln1                        
##  [94] load [ diam rad ] [ Es Nspr ] defl                                           
##  [95] Lr fx A [ B S T CI C ] D L Ln                                                
##  [96] OppAngDeg OppAngMils [ ApexAngMils ApexAngDeg CI C ] D A                     
##  [97] R [ H V ] A                                                                  
##  [98] R31 R32 R33 DF [ CF CIF T ST S CI C ] D R1 R2                                
##  [99] R31 R32 R33 DF [ CF CIF T1 T2 ST S CI C ] D DI R1 R2                         
## [100] R31 R32 R33 DF [ CF T1 T2 ST S CI C ] D DI R1 R2                             
## [101] R31 R32 R33 L [ T1 T2 ST S CI C ] D R1 R2                                    
## [102] S A [ B C ] D T L                                                            
## [103] S ST T A [ B L K C ] D DI Ps Pt                                              
## [104] shillings/gal [ strength over/under proof ] shillings/gal                    
## [105] Sq1 Sq2 DF [ CF CIF L CI C ] D LL0 LL1 LL2 LL3                               
## [106] Sq1 Sq2 DF [ CF CIF L CI C ] D Ln0 Ln1 Ln2 Ln3                               
## [107] StmVlvSize1 StmVlvSize2 dP D [ C SpGr Viscosity Q] Cv LiqVlvSize1 LiqVlvSize2
## [108] T DF [ CF CIF CI C ] D S ST                                                  
## [109] T S A                                                                        
## [110] T ST DF [ CF CIF CI C ] D P S                                                
## [111] T1 T2 K A DF [ CF B CIF CI C ] D DI S ST P                                   
## [112] thick [ width length ] BoardFeet                                             
## [113] thk [ wd len ] [ dens xsec ] wgt                                             
## [114] Tr1 Tr2 P' P [ Q ST Sr Stheta C ] D LL01 LL02 LL03

6.1.2 Back Scales

The following list contains all of the distinct scale sets found in the Collection on the back of the rules.

##  [1]                                                                    
##  [2]  [ S L T ]                                                         
##  [3]  LL01 LL02 LL03 [ T ST S C ] D LL3 LL2 LL1                         
##  [4]  LL03 LL02 LL01 K [ K' L ST CF ] DF LL1 LL2 LL3                    
##  [5] [ B ]                                                              
##  [6] [ B K L C ]                                                        
##  [7] [ CI ] D                                                           
##  [8] [ L C2 C1 ] D1 D2 D                                                
##  [9] [ L LL1 LL2 LL3 ] in                                               
## [10] [ LL1 LL2 LL3 ]                                                    
## [11] [ reactance ]                                                      
## [12] [ S B L T ]                                                        
## [13] [ S L T ]                                                          
## [14] [ S ST T ]                                                         
## [15] [ S T ]                                                            
## [16] [ T ST S C ]                                                       
## [17] A [ B K L C ]                                                      
## [18] A [ BI CI ] D                                                      
## [19] A [ S T ] D L                                                      
## [20] Addiator                                                           
## [21] C [ L F ] Xc Freq Lambda Fcs                                       
## [22] C CI L R1 R1 S T ST                                                
## [23] CH1 CH2 M1 M2 dF dC dK F P1 P2 P3 tw                               
## [24] cm [ S L T ]                                                       
## [25] D S T                                                              
## [26] D50 DLL V2 [ V1 C50 LL3 LL2 LL1 LL01 LL02 LL03 ]                   
## [27] DF [ CF CIF CI C ] D L                                             
## [28] far A [ conversions ] A cel                                        
## [29] gallons [ strength over/under proof ] gallons                      
## [30] in [ in ]                                                          
## [31] in [ S B L T ] cm                                                  
## [32] in [ S L T ] cm                                                    
## [33] in || [ S L T ] || cm                                              
## [34] K A [ B S T CI ] D L                                               
## [35] K A [ B T ST S ] D DI                                              
## [36] K A [ S T CI ] D L                                                 
## [37] L DF [ CF CIF CI C ] D 2PI                                         
## [38] L DF [ CF CIF CI C ] D DI                                          
## [39] L DF [ CF CIF CI C ] D DI Ln                                       
## [40] L LL01, LL02, LL03 [ T SRT S C ] D LL3 LL2 LL1                     
## [41] L LL1 DF [ CF CIF CI C ] D LL3 LL2                                 
## [42] LL0 A [ B S T C ] LL3 LL2 LL1                                      
## [43] LL0 LL00 A [ B K CI C ] D S ST T                                   
## [44] LL0 LL00 A [ B K L C ] LL3 LL2 LL1                                 
## [45] LL0 LL00 A [ B T ST S ] D DI K                                     
## [46] LL0 LL00 A [ B T ST S ] D Th Sh2 Sh1                               
## [47] LL0 LL00 K DF [ CF CIF CI C ] D R1 R2 L                            
## [48] LL00 K A [ B T ST S C ] D DI LL0                                   
## [49] LL00 L K A [ B S ST T C ] D DI P LL0                               
## [50] LL00 LL0 A [ B T ST S ] D DI K                                     
## [51] LL01 K A [ B T ST S ] D L LL1                                      
## [52] LL01 K A [ B T1 T2 ST S ] D DI LL1                                 
## [53] LL01 L K A [ B T SRT S ] D DI LL1                                  
## [54] LL01 L K A [ B T ST S ] D DI LL1                                   
## [55] LL01 LL02 LL03 [ T ST S C ] D LL3 LL2 LL1                          
## [56] LL01 LL02 LL03 A [ B L K C ] D LL3 LL2 LL1                         
## [57] LL01 LL02 LL03 DF [ CF CI ISd ITd Td Sd C ] D LL3 LL2 LL1          
## [58] LL03 LL02 LL01 LL00 A [ B T SRT S C ] D DI K                       
## [59] LL03 LL02 LL01 LL00 W2 [ W2' CI L C W1' ] W1 D/LL0 LL1 LL2 LL3     
## [60] LL03 LL02 LL01 W2 [ W2' L C W1' ] W1 LL1 LL2 LL3                   
## [61] LL1 LL2 LL3 [ C T CI ] D L                                         
## [62] LL2 DF [ CF CIF CI L C ] D LL3                                     
## [63] LL2 LL02 DF [ CF CIF L CI C ] D LL3 LL03                           
## [64] LL2 LL02 DF [ CF Ln L CI C ] D LL3 LL03                            
## [65] LL2+ LL2- DF [ CF Ln L CI C ] D LL3+ LL3-                          
## [66] Ln DF [ CF CIF CI C ] D DI L                                       
## [67] Ln DF [ CF CIF CI C ] D L                                          
## [68] Ln-3 Ln-2 Ln-1 Ln-0 A [ B T SRT S C ] D DI K                       
## [69] N01 N02 N03 N04 [ CF CI C ] D N1 N2 N3 N4                          
## [70] N01 N02 N03 N04 DF/m [ CF/m L CI C ] D N1 N2 N3 N4                 
## [71] N1 N01 N2 N02 DF/M [ CF/M TH SH1 SH2 L CI C ] D N3 N03 N4 N04      
## [72] N1 N01 N2 N02 DF/M [ CF/M TH SH1 SH2 Ln L CI C ] D N3 N03 N4 N04   
## [73] PI PC [ dP SpGr GasTemp SuperHeat Q ] CG CS GasVlvSize1 GasVlvSize2
## [74] Sh1 Sh2 DF A [ B CF Th CI C ] D LL3 LL2 db                         
## [75] SH1 SH2 K A [ B S Hp T1 T2 C ] D DI L TH                           
## [76] Sh1 Sh2 Th [ SI1 SI2 TI ] D S T                                    
## [77] Sh1 Sh2 Th A [ B TI2 TI1 SI C ] D LL3 LL2 LL1                      
## [78] shear [ rad diam ] load                                            
## [79] T1 T2 [ LL1 LL2 LL3 ] D S                                          
## [80] T1 T2 DF [ CF CIF CI C ] D S ST P                                  
## [81] Th Sh2 Sh1 A [ B T1 T2 ST S ] D DI K                               
## [82] theta Rtheta P [ Q Q' C ] LL3 LL2 LL1                              
## [83] theta1 S1 T1 theta2 S2 T2 theta3 S3 T3 frac                        
## [84] TI L SI

Since it is often hard to tell which side should be designated the front and which the back on many of the duplex slide rules, the scale set(s) listed here have been found on either the front or the back of a rule in the collection:

## [1] DF [ CF CIF CI C ] D L                   
## [2] L LL1 DF [ CF CIF CI C ] D LL3 LL2       
## [3] LL0 LL00 K DF [ CF CIF CI C ] D R1 R2 L  
## [4] LL01 LL02 LL03 [ T ST S C ] D LL3 LL2 LL1