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.
Baitcasting/Trolling/Spincast reels use a star-shaped wheel located on the reel handle called a star drag, adjustments are made by turning the wheel to the proper tension. Spinning reels have two types of drags â front drag and a rear drag. Front drags are generally smoother than a rear drag. The front drag features larger, multiple disc drag washers on the spool that offer a higher level of performance and durability. The rear drag uses applied pressure on the drive shaft.