Seeking source for an in line water volume meter. The meter is connected to a box which allows the user to pick the row and tank no. to output measured amount (in Liters) of water to chemical mixing tanks used in a photo lab. The co. we found on the metering box is: Circle A-W Co., Pomona CA, Modesto CA, or Portland Or. We could not find any of the listings above and beleive the Circle A-W Co. may be out of business or otherwise named. Thank You for any information you can give us.