Certified Ophthalmic Technician (COT). The Certified Ophthalmic Technician is the second core designation level confirming knowledge in 19 specific content areas specifically designed to test the certified ophthalmic assistant or program graduate who intends to advance their career in the eye care field.
The original spinning jenny used eight spindles instead of the one found on the spinning wheel. A single wheel on the spinning jenny controlled eight spindles, which created a weave using eight threads spun from a corresponding set of rovings. Later models had up to one-hundred and twenty spindles.
because your steering wheel is on a 3:1 ratio which means that three spins of the steering wheel is equal to one spin of the wheels of the vehicle. Edit. Share to: 1  A New Way to Spin Yarn A spinning wheel was used to spin natural fibers into thread. 2  Spinning wheels replaced hand spinning with a spindle and a distaff.