ETI raises £600 for Guild Care 15th January 2020 ETI, the UK's largest manufacturer of thermometers, raised £600 for Guild Care through a Christmas Jumper Day in December 2019. On Wednesday 15th January, Victor and Amy from ETI visited Methold House to present a cheque to Debbie Dollner, our COO. Thank you to ETI for their fundraising. !-- Google Tag Manager (noscript) -->