Chest: measure around the fullest part, across the chest points, keeping the tape horizontal.
Waist: measure around the narrowest part (typically the small of your back and where your body bends side to side), keeping the tape horizontal.
Hip: measure around the fullest part of your hips, keeping the tape horizontal.
Center back sleeve: measure straight from the centre back of the neck to the shoulder point, and from the shoulder point to the wrist with the arm relaxed.
Inseam: measure from the top of the inside thigh to the bottom of the ankle, standing with straight legs.