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Reviews (12)

18 October 2017
A great tool for hobbiests
I use mine regularly for building R/C Models and designing 3D Printed parts. It is powered by a single common button cell battery (mine was included). It also includes a padded plastic case and printed English instructions.
Its reliable, repeatable, and easy to use. It measures Inside Diameter, Outside Diameter, depth, and step distance. There are several similar digital calipers available that are switchable between decimal inches and metric. This Radio Shack caliper also includes a fractional inches scale. Its the only one that I've seen with all three modes. Now that Radio Shack looks to be down for the count, I ordered a second one to have as a spare.
At around $20USD I'd recommend it to any amateur or hobbiest.

29 April 2019
Fits Impact BD22 Beauty Dish.
I purchased an Impact 22 inch beauty dish, not realizing that a separate adapter was required.
The Impact BDA-IMP adapter cost an additional $29. This 152mm Bowens Speedring Insert Fit the Impact Beauty dish and mated to my Godox S Type Bracket Bowens Mount Holder for less than $10.
I am very pleased with the quality, cost, and performance and would recommend it to anyone with a similar application.

18 October 2017
They seem to work just fine.
There's not much to saw about them. I got them to slide over a 1" ribbon cable to help suppress RFI/EMI. They seem to work just fine. Since it's nearly impossible to source items like this locally, and considering their low cost, I bought a half a dozen of them.