For sale is your choice(s) of potentiometers and dials, left behind in the electronics inventory of my late father.  He was an active HAM radio operator for over 70 years, and was a radio and other electronics serviceman for much of his life.  He always kept a good supply of repair and replacement parts on hand, for speedy service calls for his customers, ready in his shop for walk-in customers, and handy for his own electronics projects.  All items were stored in a smoke-free environment.  These parts are all new old stock, in the original boxes, in the original packing, and most with original instructions sheets.  However, I have no knowledge of testing these devices and am selling them untested, as found.  Dad's electronics are non-returnable, but I have had excellent feedback from items sold so far from this inventory.

Fortunately, Dad also left an extensive "library" of catalogs and reference books, and here is a bit of what we found:

TYPE 151:  IRC (Div. of TRW, Inc.) Precision potentiometer, Circuit Instrument Div., 5K ohms, +/- 5%.  It is a 1-1/2" diameter, single-turn potentiometer, precision wire wound, with rear terminals, power handling up to 3.5 watts.  Metal case stands severe environments.  Terminals appear to be gold-plated.  It meets or exceeds MIL-R-39002.  Case is nickel-plated brass.  Attached hardware, a flat washer, lock washer & hex-mounted nut. 

TYPE 7300:  100 ohms, +/- 5%, linearity +/- 0.5%
A 3/4" diameter commercial-industrial standard precision multi-turn potentiometer.  10 turns, comes with nut * lock washer.  Slotted shaft, mounting bushing is 5/16" long with a 3/8-32 NEF, 2A thread.  Terminals extend out the back 5/32", shaft sticks out 1/2" from the end of the bushing.   Body is 1-1/8" long.  Power rating is 2.0 watts at 40 degrees C ambient.  Operational temperature range is -55 degrees C to +105 degrees C.  100 ohm has maximum current of 140 milliamps and maximum voltage of 14 volts at 40 degrees C ambient.  Terminals gold plated.  Rotation life is 10,000 cycles.  Housing is molded plastic.  Shaft and bushing are nickel brass.

TYPE 7300:  200 ohms, +/-5%, linearity +/-5%
Specifications are the same as above, except that the maximum current is 100 milliamps at 20V maximum volts at 40 degrees C ambient.)

IRC REVODEX DIAL, # RD462:   (The dial is in a sealed bag, and I didn't open it.  We have the clear model that is in the illustration from the catalog.)  
10 turns with a locking mechanism
Clear anodized, 1/4" shaft, bushing is 3/8 N.E.F. 2
Body diameter is 1" maximum, shaft extends .60 to .80" from panel
Max. bushing extension from panel is 0.296"
1" diameter counting dials
Can use with TRW 3, 5, 10, and 15 turn precision potentiometers or equivalent
Marks on dial will give you a range from 000 to 999 in 10 complete turns

(I'll set up shipping for the first item, but any additional that you add will ship with no additional shipping cost.)


I hope that these are parts that you can use, or would like to keep on hand in YOUR electronics parts inventory!

Thanks for looking here!


(Misc 20)