Its just too hot here to do anything outside, so I thought I'll bring some stuff down from the shed to play with in the house.

Some years ago I brought a laser interferometer at the Broens engineering auction in Sydney. Broens was a huge concern and made parts for the F35 strike fighter along with other high end customers. I don't know what happened but it looked like it closed very suddenly. Anyway I brought a number of fantastic pieces from this sale. One of which was the laser interferometer. Luckily it was very poorly described and photographed so it was not obvious without very close inspection what it was. Because of this it went very cheaply. Luckily it was complete with the optics for distance measurement,angle measurement and flatness. I did play with it a bit when I first got it but since I have been building the shed it has sat in a cupboard. It came in 3 big travel cases which have started to get the dreaded foam cancer so I decided to take them out and clean the pieces and remove the deteriorating foam. But of course had a good play and everything still seems to work fine. Here are some pictures

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IMG_2117.jpg I did goggle what that would be in todays money and it came back at $154,000!!

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IMG_2120.jpg The resolution is 0.01 micron or 1 microinch

IMG_2121.jpg The other thing I brought down was some long series guage blocks. This set goes to 1000mm. Wanted to check the rust proofing paper.

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Hope you enjoyed these pictures.
Keep praying for rain
Cheers

Mark
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