I've found some of the second type whatsit. I believe they are a rocker arm of sorts, for an engine application...like the governor on an old hit-an-miss engine. Not sure, but the ones I find are usually in context with other engine and shop related parts. I don't see the part here, but maybe on something like this:
Does the second one have a lense or is it a photo illusion? My thought was something similar to a jewelers loop or something optical. The first looks like a sensor or injector. Is it hollow?
Does the second one have a lense or is it a photo illusion? My thought was something similar to a jewelers loop or something optical. The first looks like a sensor or injector. Is it hollow?