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
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
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
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
Continue readingBoating: Drydock Time – New Running Gear & Rudder Modifications
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