Image 1 Base image from BBC ITOW

Image 2 Same photo enlarged caliper registration off little

argument 299:60

ratio 4.98

The caliper measure of the dial is almost exactly 5 times the diameter of the horizontal pipe

argument 299:116

ratio 2.57

argument 93:68

ratio 1.36

The horizontal measure of the telflon wrapped pipe between the top and middle tees and the value of the wide part of the tee fitting is 1.36

argument 178:175

ratio 1.017

The vertical caliper measure of the black plastic handle is 1.017 times the length of the middle tee fitting

argument 93:66

ratio 1.409

The ratio the bottom tee flanges is 1.409