Fostex E16 hum shield have a standard and 3

have a standard and 3 heavily plated gold ones

They are designed to be used with a plastic membrane underneath that then goes to the switch they are Not the type with the spigot that mounts with a spring directly onto the switch at the rear they have 4 plasic orientation pegs only

I believe this was usd with automation so one side a computer would know where the finder was and could move or record its position which would be more difficult with the audio log side

they can be made to be left or right by changing the position of the sensor metal piece in the middle of the arm

but its easy to replace

Fostex E16 hum shield have a standard and 3This is a well cool simple thing, just press the button and up it comes, I think the last user not even knew it was there as it was a bit dusty but operates fine, only have the one. Its a bit different that the B16 one