Dear vl2mf21j -
In theory, yes you can purchase a piece of equipment and take a section 179 deduction for it. It must be used 100% for business to obtain the full benefit. The outlay must be related to work not investments. The deduction would be included as a miscellaneous itemized deduction. The expense along with all other miscellaneous deductions (tax prep fees, investment expenses, etc.) would be deductible for amounts that exceed 2% of your adjusted gross income.
I would hope that this will substantially increase your wages/salary. Another consideration is insurance and use on your employer's premises.