FR Chicago Seagrave Snorkel. Scale question

[kevin54]

I just received this model, and it is an excellent addition to my growing FR collection.
In comparing this to my other FR models, the Snorkel cab looks smaller in scale. Were these 1:1 trucks that much smaller than trucks of the day?
Thanks, enjoy the summer, and stay hydrated.
Kevin

[CCFR-45]

Yes, Truck have gotten a lot larger over the years.