hat
REMAK 1 - se varyasyon nan regilarite pou nenpòt ki 3 pye (0.9 m) nan longè detèmine pa mezire konkavite ki genyen ant tib la ak yon plat 3-pye ak yon Gage Calibri
eng
NOTE 1 - The straightness variation for any 3 ft (0.9 m) of length is determined by measuring the concavity between the tube and a 3-ft straightedge with a feeler gage