I think I've found the answer. They are extensions for aircraft jack system. They go into an "inner slide tube" and allow for a "load cell" to be connected for measuring the weight.
This web page isn't the same brand/model, but it has the same concept:
MEYER® TRI-TASK AIRCRAFT JACK SET (DELUXE) from Aircraft Tool Supply
I believe they are interested in determining the plane's center of gravity with these tools.
My Dad had worked on a complete overhaul of a Skybolt acrobatic aircraft in the 90's.
I've posted them on kijiji for anyone that might have a matching model of jack these would work with.
This web page isn't the same brand/model, but it has the same concept:
MEYER® TRI-TASK AIRCRAFT JACK SET (DELUXE) from Aircraft Tool Supply
I believe they are interested in determining the plane's center of gravity with these tools.
My Dad had worked on a complete overhaul of a Skybolt acrobatic aircraft in the 90's.
I've posted them on kijiji for anyone that might have a matching model of jack these would work with.
