Very RARE 1920's Antique JEWELL Brand, Pattern 133, Portable Radio Set Analyzer

Description

For sale is a very RARE antique JEWELL Brand, Pattern 133, Portable Radio Set Analyzer , left behind in the electronics test equipment cabinet of my late father.   He was an Army Signal Corps Radio School instructor during the War, was an active and avid HAM radio operator for 73 years, and was a radio and other electronics serviceman for much of his life.   He
loved
radio and test equipment, and had quite the collection!!   Think what an awesome piece this would be in
your
collection!!
My dad admonished me
NOT
to connect power to any of his devices, but to leave that to the experts, which I am doing!   This unit is sold untested, as is, as found, and as photographed.
My husband has some electronics background, and wrote up some technical information about this unit that he found on line.   Here's some of what he found:
Description
:  This is an
extremely RARE
antique portable
Pattern 133
Radio Set Analyzer
from
Jewell Electrical Instrument Co.
, of Chicago, Illinois.   This test instrument is a 1920's artifact, offering an opportunity to own a unique piece of early RADIO HISTORY.
Jewell Electrical Instrument Co
. was founded in 1899, with headquarters in Chicago, Illinois.   Jewell manufactured an extensive line of panel meters, portable meters and equipment for testing vacuum tubes.   The Weston Electrical Instrument Company of Newark, New Jersey, acquired Jewell in 1931, and relocated the manufacturing operations from Chicago to Weston's headquarters in Newark, New Jersey, the following year.   A pdf. file with the Jewell
Pattern 133
Radio Set Analyzer
schematic can be found on the Radio Museum website.   This is a great display piece!!
Manufacturer
:  Jewell Electrical Instrument Co., 1650 Walnut Street, Chicago, Illinois, U.S.A.
Year of Manufacture
:  1926--1932.  (The Patent No. 1604611 appears on the meter.  In 1931, the company was sold.  In 1932, manufacturing relocated to Newark, New Jersey, and the successor corporation ceased the use of the
Jewell Electrical Instrument Co
. brand.)
Nameplate
:  The cover-mounted nameplate displays winged company logo, containing
"Jewell."
Other information on the label includes "Pattern 133, Made in U.S.A., Radio Set Analyzer,
Jewell Electrical Instrument Co
., Chicago, Illinois.
Power Supply
:  Appears to operate on 8 volts D.C., according to the hand drawn circuit diagrams.  The seller removed four (4) corroded batteries from the interior of this test instrument, and labelled the two leads to which they were connected.  The batteries were slightly larger in diameter than 1.5 volt batteries, and may have been 2 volt cells, wrapped in electrical tape, with no identifying information.
Schematics
:  Two hand-drawn schematics on light-weight cardboard are included.  One is labelled "Original Diagram," and the other is titles "Revised Diagram."  The previous owner was an electronic technician and formerly a radio repairman who operated his own electronics business.  He may have been in the process of restoring or modifying this instrument.   A piece of notepaper is also include.  It has a typewritten correlation of resistance values (from 100 to 1 Meg. Ohms) to voltages (from 19.7 to 0.1 volts).  These three items were found inside the
Radio Set Analyzer
case.
Instrument Panel
:  The instrument panel is fabricated from a rigid, machinable material.  It is secured to the case by four (4) 6-32 counter-sunk machine screws.  The panel features the following:  A Jewell Meter movement, Test Cable Connection feature, 7 Push-to-Test buttons, 7 Pin Jacks, a potentiometer with plastic knob, and a Tumbler Switch.  Details shown below.
Meter
:  The meter is manufactured by Jewell Electrical Instrument Co.  It has a current scale which ranges from zero to 20 milliamperes.   It also has three voltage scales calibrated at 1000 ohms per volt.  The voltage scales are zero to 8 volts, zero to 80 volts, and zero to 200 volts.   The 2-5/8" diameter, glass, meter face is secured by a metallic bezel.
Case
:  Appears to be a wooden case, covered with black leather, or simulated leather.  The cover is hinged with nearly 180 degrees of freedom, and is secured with a spring-loaded latch.  There are four (4) metal feet on the side opposite the latch.  The nameplate is mounted on the outside of the cover.  The case handle and its mounting hardware are missing.  The deep violet fabric inside the cover appears to be velour, or velvet.  A spring clip is mounted in the cover and appears designed to secure the test cable plug (not included).
7 Push-to-Test Buttons
:   These buttons are labelled, top of panel to bottom, as follows:
STD.         (1)        8 V.
VOLTS
REV.          (2)
(3)        200 V.
STD.          (4)
0 VOLTS                80 V.
REV.          (5)
PLATE       (6)        20 M.A.
M.A.
GRID          (7)        TEST
7 Pin Jacks
:   These pin jacks are labelled, top of panel to bottom, right to left, as follows:
(1)
(2)          +
20 M.A.
(3)           --
200 V.        8 V.       --
(4)           (5)       (6)      (7)
Potentiometer
:  The potentiometer has a plastic knob and about 270 degrees rotation.
Tumbler Switch
:  A single-throw tumbler switch.
Test Cable Socket
:  The test cable (not included) is supposed to connect to the analyzer here.
Approximate Dimensions
:  About 8-1/4" wide, 4-1/4" high, an 6-7/8" deep.
Weight
:  About 3.6 pounds
What Is Missing
:   The tester case is missing the handle.  Four corroded batteries were removed.  Seller is unable to determine if any internal parts or panel hardware are missing.
Not Included
:  Cable with UX4 style 4 pin plug, test leads with pin jack terminals, and perhaps other accessories.
What an awesome piece for your private collection, for props, collectors of vacuum-tube era memorabilia,
Jewell Electrical Instrument Co.
antique artifacts, or for a great restoration project!!
Thanks for looking here!!
(Radio shelves)