We used those exact same gauges in the Post Office. Used for measuring the springs in the telphone exchange selector mechanisms. There was a set of 3 or 4 of them with different ranges. Different colours.
You use them in the same way you're supposed to use feeler gauges. There's a top spec and a bottom spec. One is a go and the other is a no go. Nothing is exact.
@@StevesConsul ruclips.net/video/bvPH-tsD9ZM/видео.html same mechanisms as these. We had to pull them apart, put the bits and nuts and bolts in a box, shake it around and put it back together with the right clearances and spring tensions. Then it got inspected and got told to do it again if it wasn't right.
We used those exact same gauges in the Post Office. Used for measuring the springs in the telphone exchange selector mechanisms. There was a set of 3 or 4 of them with different ranges. Different colours.
It even says PO no 2 on the side.
You use them in the same way you're supposed to use feeler gauges. There's a top spec and a bottom spec. One is a go and the other is a no go. Nothing is exact.
Thanks for the comment, that's interesting I think they were called a Strowger switch. The PO number now makes sense.
@@StevesConsul ruclips.net/video/bvPH-tsD9ZM/видео.html same mechanisms as these. We had to pull them apart, put the bits and nuts and bolts in a box, shake it around and put it back together with the right clearances and spring tensions. Then it got inspected and got told to do it again if it wasn't right.