Shoulder Width:

Measure between shoulder seams

Pants Length:

Measure from where you want your waistband to be to where you want the hem of your pants to be

Inseam:

Measure from your crotch to where you want the hem of your trousers to end

Crotch:

Measure from the front of your waistband, under your crotch, to the back your waistband. Remember to measure from where you would like your pants to sit.

Thigh:

Measure around the largest part of the leg (between the hip and knee)

Sleeve Length:

Measure from the shoulder seam to where you would like the sleeve to stop on your arm (usually at the wrist)

Hips:

Measure around the hip, specifically where the bottom sticks out the most

Bicep:

Measure around the largest part of the arm between the shoulder and elbow

Calf:

Measure around the largest part of the bottom half of the leg (between the knee and ankle)

Apex to Apex:

Measure between both points of the chest