Collins Chain-Compensated Gasometer (Tissot Spirometer). Circa 1948.
Collins Benedict-Roth Metabolism system. Circa 1949.
Collins Respirometer Brochure – 1952
Collins Mobile Treadmills Brochure – circa 1965
Collins Vitalometer Brochure – circa 1965
Fenyves & Gut Brochure – circa 1970
Collins Execu-Tread Treadmill Brochure circa 1970
Collins Execu-Tread Treadmill Brochure circa 1970