Mechanical Calculators Manufacturer Database


Total brands in database (14 June 2024) : 1345
Corresponding brands from query : 64

Selection by country
Types legend & selection
Addiators (A)
Differential (D)
Electrical (E)
Mechanical (M)
Slide-rules (S)
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Brand/Manufacturer


Brand
Manufacturer
Origin
First
Last
Type
Info
R
R.C. Allen Businesss Machines
USA
1932
>1950
M
Radio Corporation of America (RCA)
USA
-
-
S
Raffy
FRA
-
-
S
-
Rallymat
?
>1950
-
E
-
Ramsayer (Technischen Hochschule Stuttgart)
GER
1955
-
M
Rapid Calculator
Allen Wales
USA
1923
1927
M
-
Rapid Calculators Co.
USA
-
-
A
-
Rapid Computer Adding Machine
USA
1893
-
M
-
Ray Adding Machine
USA
1905
1924
A
-
Ray Calculator Co.
USA
<1960
-
A
Ray Subtractor-Adder Co.
USA
1916
1917
A
-
Rechenmaschinenwerk Herzstark & Co.
AUT
1908
1925
M
Rechnenmaschine Gesellschaft
GER
-
-
M
-
Rechnitzer, Alexander
AUT
1906
-
E
Record
Nordhammer Rechnenmaschine, Meuter
GER
1913
1956
A
Recta
Beaucourt, Hughes
FRA
1910s
-
M
-
Regent-Feinbau
GER
1949
1958
M
Regina
Hebecker & Taetzel
GER
1925
1968
M, E
REGINA-Rechenmaschinen Heinrich Holz
GER
-
-
M
-
Regna Oy
FIN
1960s
-
M
Reiss GmbH
GER
1968
-
S
Relay
San-Ai Measuring Instruments
JAP
-
-
S
Reliable Typewriter & Adding Machine Corp. (RTAM)
USA
1927
1950
A
-
Rema
Braunschweig Rechnenmaschine-Fabrik Rema
GER
1915
1956
M
-
Remington
USA
1960s
1968
M, E
-
Remington-Rand, Inc.
USA
1927
1932
M, E
Renown
?
-
-
?
-
Reports
?
1950
-
M
-
Result
?
1940s
-
M
-
Resulta
Paul Brüning
GER
1911
1967
M, E
REWA
GER
~1910
-
S
Rex-Rotary Int. Comp. A/S
DEN
-
-
M, E
-
Reybaud (RéBo)
FRA
1925
1930
A
-
Reynal, Camille
FRA
1925
-
S
Rhei-Ta
JAP
-
-
S
Rheinische Metallwaren- und Maschinenfabrik Sömmerda AG
GER
1928
-
M
Rheinmetall GmbH
GER
1924
1965
M, E
Richard Müller A/S
DEN
<1950
-
M
Richardson
USA
-
-
S
Richer
FRA
1874
-
S
Ricoh Company Ltd.
JAP
<1960
>1984
E, S
Rista
GER
1960s
-
S
RIV Officine di Villar Perosa
ITA
1906
1961
M
Robert Kling GmbH
GER
1918
1975
M
Roberts, Edward
UK
1750s
-
S
Robinson
?
-
1925
M
-
Robinson, Tim
USA
2005
-
D
Robjohn, Wiliam
USA
1872
-
M
-
Rokli
Robert Kling GmbH
GER
1949
1975
M, E
-
Rolls Record
GER
-
-
S, A
-
Romana
Italcalcolo S.A.
ITA
1939
-
M
-
Romanoni
Remington
ITA
<1958
-
M
Roos Co.
USA
1930s
-
S
Rosseland, Svein (-> Oslo University)
NOR
1942
-
D
Roth, Didier
FRA
1841
-
M
-
Royal
Ushida Yoko Co., Ltd.
JAP
1960s
-
S
Royal
Litton
UK
1950s
-
M
Royal McBee Corp.
USA
-
-
M
-
RPGP
BUL
1970s
-
S
Rudolf Schweizer & Cie.
SWI
1936
-
A
Runge, Eduard
GER
1896
-
A
-
Ruthardt & Co. GmbH
GER
<1927
-
M
Ruxton Multi-Vider Corp.
USA
1929
-
S
Ruyi
Sida
CHN
-
-
S


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