Manufactured to military standards by Clarostat in the USA, these are best quality military specification potentiometers, 10K Ohm linear and high 2 Watt rated, to 500Vdc.
Manufacturers part number is RV4LAYSA103A and the NSN for those intersested is 5905-00-518-5595.
Totally hermetically sealed against environmental elements, the RV4 series used state of the art (for the time!) manufacturing processes to make these conductive plastic military pots. Brass nickel plated shaft and bush with stainless steel cover and connections are heavy solder eye tags.
Tolerance is 10% and rotation is 312 degrees.
Please note this pot is fitted with a removable 0.5" locking bush, and the shaft has a screwdriver slot in it - so they were originally designed to be set and then locked. Of course can be used as a usual pot if locking is not required.
Body dimensions are 28mm diameter x 15mm deep.
Lovely new old vintage stock, these pots are in the region of 60 years old are in excellent condition.