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Tag: plates

Cat Links Teardown

UM25C USB Power Meter

Posted on August 1, 2018May 1, 2018 The Engineer

Here’s a nice little feature-packed USB power meter, the UM25C. This unit has USB-C along with the usual USB type A connectors, along with a bluetooth radio for remote monitoring of stats via a Windows or Android app. Construction is nice, it’s a stack of two PCBs, and polycarbonate cover

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Cat Links CRT Tech, Teardown

Thorn Ultra 6816 B&W CRT TV Teardown

Posted on December 1, 2016October 16, 2019 The Engineer

The other day at the local canal-side waterpoint, this TV was dumped for recycling, along with another later model Colour TV. This is a 1970’s Black & White mains/battery portable made by Thorn. It’s based on a common British Radio Corporation 1590 chassis. Having received a soaking from rain, I

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Wavelengths, Beam Characteristics

HeNe Laser Wavelengths While what comes to mind when there is mention of a HeNe laser is a red beam, those with other wavelengths are manufactured. The most common HeNe lasers by far produce light at a wavelength of 632.8 nm in the red part of the visible spectrum. This

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Cat Links Boating, Canals, Personal Project

Boating: Drydock Time – New Running Gear & Rudder Modifications

Posted on July 9, 2016July 9, 2016 The Engineer

We’re now on the final leg of the jobs to be done on the boat! Above is the new prop & shaft, supplied to us by Crowther Marine over in Royton. To fit our current stern tube & gland, the shaft is the same diamter at 1-3/8″. Unfortunately no 4-blade

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Combination Lock
Cat Links Randoms

Safe 4 Tumbler Combination Lock

Posted on December 9, 2012December 9, 2012 The Engineer

Just a very quick post with some images of an industrial safe combination lock. Here the tumblers are lined up to allow the lock to open. The locking bar has dropped into the slots in the tumbler plates & engaged with the cam. Rotating the cam pulls the bolt into

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