Carewell bicycle frame is supported by a wooden stand, From the exterior side of which two uprights ascend and carry a desk and which provide, Cross piece for the attachment, Directly in positioned at the front of of the, The subject tension balances and other pieces in front of the, Ofthe subject tension balances and other pieces of apparatus. A cast iron wheel of 5 1/2 feet in circumference, Weighing 22 kilos and mounted featuring ball is substituted, Bearing technology for the back wheel. This wheel has slightly beveled edges and is turned true. To the circumference of this, A stout calico and the, Is applied two ends of the band ate attached to springbalances of 6 lbs. Range graduated in one oz. Calico, Band to the balance pass round adjustable pulleys so as to offer them the right direction. An adjustable record counter records the revolution of the wheel.