T E C H N I C A L   D A T A   of the Mechanical Printing-Calculator
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                    REMINGTON-RAND                              7/7

Serial Number:      M139395

Dimensions:  (ca.)  Width   =   7     " /  18 cm
                    Depth   =  13     " /  33 cm
                    Height  =   5 1/2 " /  15 cm

Weight:      (ca.)  12 lbs  /  5 kg

Mechanics:          10-Block-Keyboard,
                    Serial-to-parallel Conversion
                    10-Block-Keyboard

                    Black Nylon Ribbon (= Typewriter):
                    1/2" * 20'  /  13 mm * 6 m
                    Paper Roll (Standard):
                    2 1/4" * 2 3/4" * 165'  (W * D * L)
                    57 mm  * 65 mm  * 50 m  (B * D * L)

Functions:          Addition only
                    Repeat, Subtotal, Total

Registers:          Input       =  7 Decimals
                    Arithmetic  =  7 Decimals
                    Printing    =  8 Characters
Manufacturer:
                    REMINGTON-RAND INC.
                    Buffalo, NY / USA
                    1935

H O W   T O   U S E    the  REMINGTON-RAND
******************************************

ENTER A NUMBER:
---------------
The actual number of digits entered are shown on front with the
red slider. If wrong digits are entered, push this red slider to
the right to clear the input.

ADDITION:
---------
Everytime a number is entered and the handle is pulled, the number
is printed and added to memory.

REPEAT:
-------
To enter the same number more than once, press & push the right red
key (X) before pulling the handle. The keyboard will not be cleared
after releasing the handle. To release the (X) key: Press & pull.

SUBTOTAL:
---------
The cumulated sum will be printed when the upper-left red key (S)
is pressed. The memory will hold the actual sum after releasing the
handle - BUT (S) IS LOCKED - Before using (S) the handle has to be
pulled to make a line feed.

TOTAL:
------
The total sum will be printed when the lower-left red key (T) is
pressed. The memory will be cleared after releasing the handle -
BUT (T) IS LOCKED - Before using (T) the handle has to be pulled
to make a line feed.

PRINTOUT - Example with Comments:
*********************************

^^^^^^^^^^^^^^   To clear memory:
|          * |   Pull handle, Press (T=Total), Pull handle
|            |   (= Paper feed)
|            |                        < Max.Input = 7 decimals > 
|  1234567   |   Enter (1st) number, Pull handle
|  2345678   |   Enter (2nd) number, Pull handle
|            |   Pull handle (= Paper feed)
|  3580245 S |   Press (S=Subtotal) to print sum, Pull handle
|      456   |   Press (X=Repeat), Enter number, Pull handle
|      456   |   Release (X), Pull handle
|            |   Pull handle (= Paper feed)
|  3581157 * |   Press (T) to print total sum, Pull handle 
|            |
|          * |   Memory is clear
|            |                       < Max.Output = 7 decimals >
|  9999999   |   CAUTION: Largest number entered, Pull handle
|        1   |            Add 1
|          * |   OVERFLOW WITHOUT WARNING !!! Memory is clear
|            |   
^^^^^^^^^^^^^^

SUBTRACTION:
============
Addition is the only operation directly performed on the machine.
For subtraction an indirect method of addition is necessary!

The "9-Complement" Methode:

           KEY-Figures  =   1   2   3   4   5   6   7   8   9
       "9-Complements"  =   8   7   6   5   4   3   2   1   0

Entering the SUBTRAHEND requires 2 steps:
----------------------------------------------------
(A) SET ALL 9s LEFT OF THE SUBTRAHEND 
(B) Enter the SUBTRAHEND MINUS 1 use the "9-Complements"

PRINTOUT-Example    876 - 543  =  333    with Comments:
*******************************************************

^^^^^^^^^^^^^^^^^   To clear memory:
|            *  |   Press [T=Total], Pull handle
|               | 
|        876    |   Enter  + 876 , Pull handle
|    9999457    |   Enter  - 543  < 543 - 1  in "9-Complements" >,
|               |                  Pull handle
|        333 *  |   Press [T] to print total sum, Pull handle 
|               |
^^^^^^^^^^^^^^^^^

For more DETAILS see the INSTRUCTIONS to the BURROUGHS-CALCULATOR

CHANGING THE RIBBON:
********************

Notice that the spools are unusual: The silver knob and the upper
half of the spool is one piece! After removing, the spools can be
lifted. A standard typewriter ribbon is the right replacement ...

   

REMARKS:
===================================================================
This little machine was a hit in its time, since it weighted only
12 pounds - most competitors during this period were heavyweights.
It was Remington-Rand's first adding machine. It was also made and
distributed under the name MONARCH.

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© C.HAMANN      www.tfh-berlin.de/~hamann      impressum     12/23/07