Battery Saving Switch in Digital Caliper

One of the problems with cheap digital calipers is relatively quick battery drain. Even when the caliper is "turned off" - so it seems.
In reality, the display off doesn't mean that the circuit no longer drains the battery. Current measurements reveal that a cheap caliper turned off continues to consume the same, or almost the same, current in both ON and OFF state. A quick remedy of the problem is removing the battery when caliper is not in use. Another remedy is to install a switch cutting off the battery.
100 push button switches from Amazon:
www.amazon.com...
Disassembly of the caliper starts with peeling off the back sticker. The Lockpicking Lawyer shows a method how to remove and reposition a sticker without destroying it: • [1422] Did I Cheat On ...
Other caliper mods:
Switch:
• Digital caliper batter...
Slider:
• The 'Never Flat' Digit...
Mitutoyos comparison with micro Amps measure:
• 17 Warning Signs Your ...

[@josephe3697]

I always take the battery out.

[@tektech1065]

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.