There are two reasons for doing that: 1. To save the battery from depletion, and 2. To prevent it from leaking inside the caliper. A mechanical switch solves problem #1. A lithium battery solves problem #2. But in case of LR44 or SR44 batteries (Mitutoyo calipers), I would buy them brand name, fresh, and always replace for a brand new every few years.
I always take the battery out.
There are two reasons for doing that: 1. To save the battery from depletion, and 2. To prevent it from leaking inside the caliper.
A mechanical switch solves problem #1.
A lithium battery solves problem #2.
But in case of LR44 or SR44 batteries (Mitutoyo calipers), I would buy them brand name, fresh, and always replace for a brand new every few years.