Replacement feet for Phase Matrix Inc.EIP 25B/28B microwave frequency counters. These will likely fit all EIP branded counters, but I don't have any to test fit them to. They attach through the bottom panel of the counter with a pair of self tapping screws with fairly coarse thread and have a ridge to facilitate stable stacking.
The picture shows two original feet on the top and two printed replacements on the bottom.
Prints best upside down (flat face up) with supports, use a higher infill for durability - it attaches to the chassis with self tapping screws and low infill can make the interior layers the screws go into pull away from the part. For this reason I'd recommend ABS/PETG/somewhat flexible filaments instead of PLA, since the coarse threads of the self tapping screws may fracture the harder PLA parts.