Ruston gears??

[calfshed2]

Thanks for looking
Owing to interest thought it was worth adding sizes! These are rough (Measured with tape measure)
Gear One First Left 13 teeth, 4 inch bore 10 1/2 across gear, back plate 8 holes 1 inch ,14 o/d inches across ,2 keys
Two next to each other engaged 5 inch bore, 12 teeth,11 inches o/a, 4 inches thick three keys
Middle top 3 inch bore, 12 teeth shielded ,3 and a half inch thick, 7 and 3/4 inches o/a two keys
Bottom right 4 and a 1/4 inch bore ,14 teeth ,Shielded 10 inches o/d 3 and a half inches thick
Gear above this one 3 and a 1/4 inch bore, 13 teeth ,Shielded 9 and a 1/2 inch o/d, 4 inches thick
Square drive 3 and a quarter inches 14 teeth guide for shifter 6 inches thick 8 and a 1/2 inches o/d

Hope that helps think the square one is not Ruston????

Thanks Rob