# What are the operations made while using abney clinometer?

Captain William Abney was at the school of Engineering, Chatham, England in the 19th Century. A clinometer is an optical device for measuring elevation angles above horizontal. A common use for this instrument would be to measure the height of trees

### Why does the order of operations matter?

Order of operations matters because you could potentially get an incorrect answer by not using it. e.g. (/ means divide by or represents a fraction [same thing]) 13+2/3 without brackets is 41/3 while (13+2)/3 = 15 Brackets Exponents (powers) Multiplication Division Addition Subtraction If you perform your operations by this rule you will always gain the correct answer