Hydrometers

BS812-121, Length = 190mm, Divided in 0.002°SG 

with UKAS certificate
BS812-121, in 0.001°SG increments

Medium tension 250mm long

0.005 divisions, 250mm long

0.005 divisions, 250mm long, supplied with UKAS calibration certificate

EN1744-1, 0.002 increments

with UKAS certificate, in 0.001 increments

range 0.995 to 1.030g/ml 345mm long
BS1377-2

range 0.995 to 1.038, 280mm long

range -5 to +60g/L 280mm long