InterCity 125 (Class 43 and Mark 3)

• Builders: Crewe for the power cars is the Science Museum Group's record for 43002, the first production power car; Derby for the coaches is Angel Trains'
• ScotRail's five-coach sets: RAIL (2017) gives 17 five-coach and nine four-coach sets as planned; today's split is not confirmed from a primary source; RAIB's 2020 Carmont set had four coaches
• Mark 3 width: Angel Trains prints 9 ft 3 in (2.82 m); BR's diagrams print 9 ft 0 in (2,740 mm) at the waist and 9 ft 0 in (2,743 mm) over the stepboards; not shown
• The drawing: LNER's vehicles in the 1976 livery, not a ScotRail set; the coach order is illustrative
• The power car's wheels: 3 ft 4 in (1,020 mm) is printed in BR's booklet on the 1973 prototype, not on the production diagram
• The power car's bogies: BR's 1981 diagram calls them BP10b (BP10c with GEC motors); their shape is LNER's drawing, re-pitched to BR's wheelbase, not BR's
• The coaches' wheels (3 ft 2 in (965 mm), as LNER's sheet draws them; no printed figure) and their BT10 bogies (LNER's drawing, re-pitched to BR's 8 ft 6 in (2,600 mm) wheelbase)
• The coaches' doors and windows: measured off scanned diagrams drawn at about 1:110, to about 30 mm; the TF's windows sit about 90 mm towards its No. 2 end as GH102 draws them, the TS's are symmetrical; the catering car's window heights are drawn with their tops level with the saloon windows', as GK401 draws them
• The catering car: BR's GK401 (TRUB) as at March 1987, its blanked-off window openings left out; the 1976 cars may have differed in detail
• The coaches' solebar band (down to 3 ft 0 in (917 mm)) is the paint sheet's; BR's diagrams draw the body's foot at 3 ft 5 in (1,040 mm) and nothing below it but the bogies, steps and fairing
• The orange cantrail line: on LNER's sheet (its 'Cantrail Stripe Orange'), not seen on other drawings of the 1976 livery; the standard-class coach's blue band above the windows is also the sheet's
• The ScotRail coaches' dark window band: drawn 6 ft 10 in to 9 ft 5 in (2,090 to 2,880 mm) round the drawn windows; 42213's photograph puts it at 6 ft 10 in to 9 ft 4 in (2,090 to 2,840 mm) with the glass lower in it than the drawn windows, and its ends are placed by eye, 1 ft 3 in (390 mm) past the end windows
• The windows' rubbers (set ICW): 15 mm, read on photographs at 5-20 mm a pixel (the Mark 3's only on a blur-limited 12092, which gives 30 mm or less); the shadowed reveal some photographs show above and ahead of the power car's van windows (about 60 mm more) is not drawn
• ScotRail Inter7City: the coaches: the guidelines draw no Mark 3 coach, so they are drawn in the power cars' rear-section colours (grey, a navy band at the foot, the orange line under the roof, a dark roof), not confirmed from a source; the doors are navy leaves in the grey, and the buffet's end door is grey, as photographs of ScotRail's sets show them (2024 and 2025); which of the buffet's two drawn doors is the grey one is as 40616 is photographed (its door at the left of the frame), the drawn buffet being the 1976 set's coach type, not ScotRail's
• ScotRail Inter7City: the trailing power car is drawn as the leading one turned round; the sheet's other side carries different landmark silhouettes (the lighter silhouettes on both are left out)
• ScotRail Inter7City: colours: the sheet's own fills; the guidelines give no paint references for the HST
• ScotRail Inter7City: the sheet's heights scale 2% differently from its length (34.99 against 34.25 mm per unit); the livery is placed by the bodyside's top and foot
• ScotRail Inter7City: the livery's placing: by the paint sheet's nose, radiator grille and rear; BR's GB502 puts the grille about 90 mm further forward than the sheet does, so the sheet's landmarks may sit up to that much out
• The years of the former liveries come from Wikipedia's class article and the other sources listed, and haven't been checked against a second source.

Know a source for one of these? Send it to us → (opens in a new tab)