( ( in ( my experience ) ) ( ( the error ) ( ( is ( ( usually smaller ) ( than ( ( the precision ) ( of ( internal ( measurement errors ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN in) (NP (PRP$ my) (NN experience))) (NP (DT the) (NN error)) (VP (VBZ is) (ADJP (ADJP (RB usually) (JJR smaller)) (PP (IN than) (NP (NP (DT the) (NN precision)) (PP (IN of) (NP (JJ internal) (NN measurement) (NNS errors))))))) (. .)))
in my experience the error is usually smaller than the precision of internal measurement errors.
(ROOT (S (NP (PRP You)) (ADVP (NP (NP (NN decrease) (NNS errors)) (PP (IN in) (NP (DT an) (NN experiment)))) (IN by)) (VP (VBP take) (NP (JJ many) (NNS measurements))) (. .)))