Micro Balances
OERTLING Micro Balances 1940 - 1980
Series 63
Short beam swinging pointer: 1940 - 1952
141 & 142
With beam rider, air damped: 1948 - 1980
146 & 147
Riderless beam air damped: 1953 - 1980
Model QO1
Quartz fibre beam torsion balance: 1960 - 1979