I am down to the last company, Gilbert and Barker. I've already shown some pictures of sales literature as well as some photos and an appeal for input. Unfortunately there was no input and I do not know for sure what was used when, and on what model. Following are a total of 9 photos to help you. These are the models that need to be identified:

67 - 10 Gallon - Possibly Identified
T-176 1925 Version 1
T-176 Square Version
T-176 1926 Version 2
T-176 1928 Version 3
T-177 1925 Adj. Stops
T-178 1926
T-179 1927 Mechanical Measure

Round.jpgRound 1.jpgRound 2.jpgRound 3.jpg