Your Toughest Measurement Challenges

Here is a story about getting measurements wrong.

Way back in the 1970s I was working at a shipyard in Norway, we were building a super tanker at the time and after the first two tanks were built it was discovered that one of the tanks was 18mm longer that it should have been ie, between two of the bulkheads. The inside height of the tank was 28m and the inside beam was 30m, just imagine how much more oil that tank could hold more than it was designed for!

We never changed the dimentions!!!!!!

Spencer.

Is there a laser tool/gadget which is replacement to dial gauge in all respect? Should be of same size or smaller, should not have emitter/sensor connected to processor/reader by cable etc, all single, small comprehensive unit...

OK, I have a Horizontale Boring Mill that has a Facing Head on the front. With this a tool can be mounted on a slide and a hole can be bored out. Advancing the facing head slide allows the bore to be enlarged for multiple passes to the required size. Because the head turns from 18 to 2000 rpm, there is no way a wired indicator can be mounted to the slide. Any way to read the actual facing head position via radio, wi-fi, infared etc? MIKE L.

A municipal council has to know the typical inflows over a period of months into a community sewage sump equipped with one out-pump, but will not pay for a flowmeter. We fitted an analog level transmitter to the sump and connected to a radio telemetry system. Also inputted to the telemetry a pump run contact. Sent all the info via radio to central SCADA center. Found specs on pump flow curves and CSA of sump. From trend at SCADA of level and pump runs was able to integrate pump ON times to calc hourly inflow. I wonder what sort of accuracy the results gave us?

Rok