*** 5 DAY AUCTION *** 5 DAY AUCTION *** 5 DAY AUCTION ***

This item is a vintage SANWA Model SP-6D Electric Instruments Multimeter.  Included are a set of 34-1/2 inch red and black test leads (pictures 1 and 3.

The multimeter has a 16 position rotary switch which is used to select a specific electrical parameter to be measured (pictures 1, 2, and 5).  Each position was individually tested for proper performance.  They all worked perfectly.

The meter needle is perfectly straight and moves smoothly.

The Ohm adjustment potentiometer also works smoothly as designed.

Here is an instruction sheet (with diagram) to replace burned out resistors on the inside of the back cover (pictures 6 and 7).

Overall dimensions of the multimeter are:

·      Width:   3-11/16 inches

·      Depth:     1-1/2 inches

·      Height:    5-1/8 inches

SELECTOR SWITCH FUNCTIONS AND MEASUREMENT RANGES

·      Resistance

Ωx1

Ωx10

KΩ

·      AC Volts

1000

500

250

50

10

·      DCmA

.05

25

500

·      DC Volts

1000

500

250

50

10

MAINTENANCE

• All electrical contacts on the selector switch, ohm adjustment potentiometer, and battery contacts were cleaned are fully functional.

• The two AA size batteries used for operation of the resistance functions were replaced with new Duracell batteries.  The original battery and battery holder on the left of picture 6 was severely corroded.  The battery was discarded followed by the holder and electrical terminal connections being cleaned. 

• There is a label attached to the inside of the cover (pictures 7 and 8) which contains a diagram and instructions to replace burned out resistors due to excessive volage being applied to the meter.  The verbiage on the label reads as follows: 

HOW TO REPLACE A RESISTOR BURNT OUT

The SP-6D adopts non-adjustment circuitry which allows you to replace by yourself the resistors burnt out account of overvoltage.  The illustration shows the resistors subject to burnout when 1KV is inadvertently applied to each range  of the meter.

Replacement resistors of 1% allowance are available at your dealer.

SANWA ELECTRIC INSTRUMENT VO. LTD.

PICTURES

A.    There is some glare in the pictures.  Attempts were made to eliminate as much as possible, but some remains.

B.    Pictures 1, 3 and 4 show the meter.  The way the light hits the needle produces a shadow on the scale.  When making measurements, the multimeter can be physically moved to eliminate the shadow.  This will allow a clear and concise reading to be made. 

1. Multimeter with test leads
2. Multimeter
3. Test leads
4. Close-up: Meter
5. Close-up: Rotary function switcher
6. Electronic board
7. Instruction sheet for replacing burned out resistor(s)
8. Inside of back cover
9. Outside of back cover

CONDITION

Overall condition of the multimeter is excellent.  As mentioned above, all 16 functions were individually tested and deemed to work perfectly.

There are some minimal scratches on the case, but no chips or dents.

There are no scratches, cracks or brakes on the meter glass.

PAYMENT AND MAILING

Winning bidder prepays $14.75 for USPS economy shipping within the United States.  NOTE: Postage rates change on July 9, 2023.

No international shipping.

Immediate payment via PayPal is requested.