Has anyone here used one of these? https://www.dlgelectronics.com/photo...oductpage.html - I've always worked with a Pentax Digital Spotmeter and have just spent some time trying understand how these focal plane meters are used in practice. There is a description of a 'Sinar Six' on pg 179 of 'View Camera Technique - 7th ed' but this UK manufactured unit seems like a simplified product, strange though that no reviews or user experiences have appeared online. I think CatLabs may distribute in the USA.

Considering the relatively economical pricing of the above unit I wonder if they represent a viable option vs. the price of used Pentax meters? On the other hand Gossen and Sekonic are still around.