Optician Salary in Canada. The Canadian government classifies an optician under the group 31: professional occupations in health (3231). According to their statistics, the average annual income for someone working in the profession falls around $39,000 with approximately 16% of opticians earning over $50,000 per year.
So it needs to be tough. Low-cost bench vises often use steel, which is light and cheap. It's fine for light duties and for hobbyists, but it doesn't have the high resilience a professional would need. The best bench vises are made of cast iron, and two variants can be found: gray iron and ductile iron. Gray iron isn't about color, it's used to indicate the presence of graphite flakes. It's the most common form of cast iron, used in everything from vises to stove tops.
End vises (also called 'tail vises') are usually mounted on the right side of the bench for right-handed workers. They can typically hold work in two ways: between the jaws and along the top of the bench using moveable 'dogs' in place of jaws. Not all benches have tail vises.