Erwin Sattler Mechanica M1 Upgrade Kit: PENDULUM LENSE
A solid pendulum lense can be ordered as an optional extra for the pendulum. The fact that there is less air resistance means that the amplitude of oscillation, and consequently the rate, remain steadier. The lenses are numbered in sequence and can be fitted with the engraving either at the front or at the back. The lense is available in bronze or nickel finish.
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