Pressure guage at the Steam Museum in Kew, London Photo credit: William Warby (https://www.flickr.com/photos/wwarby/3016549999) – Licensed under Creative Commons Attribution 2.0 Pressure Guage Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * For security, use of Google's reCAPTCHA service is required which is subject to the Google Privacy Policy and Terms of Use.I agree to these terms (required).