I repaired and calibrated surveying instruments not long after the dawn of the digital age. The older techs regaled me with tales of optical instruments that ha

I repaired and calibrated surveying instruments not long after the dawn of the digital age. The older techs regaled me with tales of optical instruments that had fallen in pools at the bottom of mines. Doused quickly enough in clean water and then disassembled, cleaned and reassembled these instruments continued to work properly. Boiling doesn't sound like a bad option.