Commercial Archive

Addimult Procentor	⌀ 9 cm	D [ C % ]
ALRO (All-Round): AL-RO (AC-1.01)	⌀ 13 cm	C/D	Pounds/Shillings Yards/Feet Pounds/Ounces
ALRO (All-Round): ALRO-PATENT (AC-1.02)	⌀ 13 cm	C/D	Pounds/Shillings Yards/Feet Pounds/Ounces Fractions
ALRO (All-Round) - Ha.A2 (AC-1.12)	⌀ 13 cm	C/D	Pounds/Shillings Yards/Feet Pounds/Ounces Fractions
ALRO 1010 Commercial	⌀ 13 cm	C/D Currency	Fractions Units
ALRO 1010 Bureau Desk	⌀ 19 cm	C/D Currency	Fractions Units
ALRO Ha-Tex Version 1	⌀ 13 cm	C/D Currency
ALRO Ha-Tex Version 2	⌀ 13 cm	C/D Currency
ALRO logo CJD	⌀ 13 cm ?	C CI A % Conversions
American Oil Company Discounted Cash Flow Slide Rul	21.6 x 7.6 cm	[ Cash Flow Unifrom Cash Flow Declining Cash Flow CI C] D	Instructions
Appoullot LOGZ C	⌀ 29 cm	C %
Appoullot LOGZ C2	⌀ 13 cm	C %
Appoullot LOGZ C3	⌀ 20 cm	C %
Aristo 107 Commerz Junior Projection
Aristo 305 Demonstration
Aristo 307 Demonstration
Aristo 5/150 Schul-Commerz
Aristo 0602 Circular	⌀ 8 cm	C [D %
Aristo 603 Circular	⌀ 12 cm	C [D %
Aristo 604 Circular	⌀ 10 cm	C [D %
Aristo 605 Circular	⌀ 10 cm	C [D %
Aristo 606 Prozent Circular	⌀ 22 cm	C [D %]
Aristo 621 Circular	⌀ 12 cm	% C [D vol area]	Data
Aristo 623 Commerz III	⌀ 12 cm	volume area C [D DI % ]
Aristo 845 Commerz I	12.5 cm	cm / % KZ [T2 P T1] Z M	£ s d
Aristo 845 Praktika	12.5 cm	cm / % KZ [T2 P T1] Z M A	£ s d
Aristo 865 Commerz	12.5 cm	cm / % DF [CF CIF CI C] D M LL1 LL2
Aristo 905 Commerz	28.2 cm	cm % KZ [T2 P T1] Z constants ins
Aristo 0905 Commerz	28.2 cm	cm % KZ [T2 P T1] Z constants ins
Aristo 0905 _schul-Commerz	28.2 cm	cm % KZ [T2 P T1] Z M £ s d	cm / \ins
Aristo 0907 Commerz-Junior	28.2 cm	A DF [CF CIF CI C] D L LL1 LL2
Aristo 945 Commerz I	28.2 cm	cm/ % KZ [T2 P1 T1] Z A	[ £ s d] inch
Aristo 945 Praktika	28.2 cm	cm/ % KZ [T2 P1 T1] Z A	inch
Aristo 955 Commerz I	28.2 cm	cms/ % KZ [T2 P2 P1 T1] Z M £ s d
Aristo 965 Commerz II	28.2 cm	cm /% KZ [T2 P2 P1 T1] Z M £ s d \ ins	[ZZ3 ZZ2 ZZ1 ZZ% T1]
Aristo 1045 Praktika	52.5 cm	cm/ % KZ [T2 P T1] Z M	ins/ [£ s/d]
Aristo 1055 Commerz 1	52.5 cm	cm/ % KZ [T2 P2 P1 T1] Z M £ s d
Aristo 60117	⌀ 12.0 cm	Conversion A B D [ C CI % ]
Aristo 90128	? cm	Special Scales
Arnault Paineau CALCULATEUR DES BANQUES	⌀ 12.0 cm	D DI [ C % ]
Blundell 308 Academy Accountants	25.0 cm	S LL1 M [ T IL(%) IR(%) C ] D LL3 LL2
Blundell 409 Omega Merchants Rule	25.0 cm	ins / M months [days/weeks C] D M M
Blundell 503 Academy Commerce	25.0 cm	L K A [ B CI C ] D LL3 LL2	M1 M2 Months [ days/weeks % C ] D M3 M4
Blundell 808 Accountants	25.0 cm	S LL1 DF [ CF IL(%) IR(%) C ] D LL3 LL2	M [ T ]
Blundell C24 D Cost & Profit Reckoner	25.0 cm	S D [ IR(%) IL(%) A ] B L(£)
Blundell M2882 Discount Profit Calculator	⌀ 30? cm	Profit(%) Profit(%) 'Scales in Windows'	Profit(%) Profit(%) 'Scales in Windows'
Blundell Exchange Rate Calculator	⌀ 9.5 cm	£ per Tonne [ '$ per 100LB' 'Exchange Rate' (in window) ]
Blundell M3264D Pocket Discount & Profit Calculator	⌀ 10.7 cm	£ %
Blundell P5939 Metric Imperial Price Converter	19.0 x 10.3 cm	Special scales	Special scales
Blundell P3610 Profit Calculator	⌀ 14.7 cm	% £ s d C	Instructions
Calderoni	25 cm	K(D) [ M(DI) J% T(C) ] Z(C)
Carbic Otis King	66 ins	£ s d
Classic Series VI		ins/ £ [Nos and % Nos and % ] s d	Instructions
Commodity Crdit Company Interest Disc	⌀ 28 cm	Date range [Interest period]
Concise 46	⌀ 11.2 cm	D = C = CI =% %
Concise 71	⌀ 7.7 cm	D [ C % CI ]
Concise 320 Calendar	⌀ 9.7 cm	D = C = CI A K	Calendar and Conversions
Concise 320 Calendar Variant	⌀ 9.7 cm	D = C = CI A K Calendar	Conversions
Davis Murgatroyd's Percentage Calculator		?
Dietzgen 1756 NO PHOTO
Dietzgen 156-20 NO PHOTO
D & P 43	? cm	A [ T(B) conversions G(C) ] D	[ T(CF) Z/M G ]
D & P 43.28 Business System Dr. Stender	25 cm	D [C CI CF ] DF E	G Z
Diwa 401 Businessman	25 cm	27cm / sh,d KZ [ T P% T ] Z L / ins	[ LL1 LL2 C ]
Diwa 541 Businessman	25 cm	cm/ sh,d DF [ CF% CI C ] D £
Diwa 541-1 Businessman	25 cm	cm/ sh,d DF [ CF% CI C ] D £
Diwa 641	12.5 cm	cm/ % KZ [ T Val(P%) E(T) ] V(Z)
Diwa 741 Businessman	12.5 cm	A DF [ CF % CI C ] D K L	cm/ \ins
Dupuy Dubray L'Indispensable	39.8 cm	% [ C ] D
Electrical Apparatus Company Two Part Tariff Calculator	25.0 cm	Special Scales	Instructions
Ericsson Proportion Calculator	⌀ 4.75 cm	(50-75) %
Fabian Carli Roulette X (Model B)	⌀ 24.1 cm	Special Scales
FABER CASTELL 1/22 Disponent (Variation 1) 1946	25 cm	ins/ constants KZ [ T val(P%) E(T) ] V L \ £	Instructions [LL1 LL2 C]
FABER CASTELL 1/22 Disponent (Variation 2) 1958	25 cm	cm / constants KZ [ T val(P%) E(T) ] V L \ £	Instructions [LL1 LL2 C]
FABER CASTELL 1/22 Disponent (Variation 3) 1972	25 cm	cm / constants (DF)KZ [ (CF)T (CI) val(P%) (C)T ] (D)Z L \ £	Instructions [LL1 LL2 C]
FABER CASTELL 1/22A Disponent with Addiator	25 cm	cm / constants KZ [ T val(P%) E(T) ] V(Z) L \ £	Instructions [LL1 LL2 C]
FABER CASTELL 1/27 1947	25 cm	cm X³ KZ(DF) [ T(CF) P%(1/X) T(X) ] Z(X) X² / S T
FABER CASTELL 1/28 Super Business (Variation 1)	25 cm	L / K DF(P%) [ CF(days) CI C(days) ] D(Int) A \ sh/d £	[ LL1 LL2 C ]
FABER CASTELL 1/28 Bivius 1958 (Variation 2)	25 cm	L / K DF(P%) [ CF(days) CI C(days) ] D(Int) A \ sh/d £	[ LL1 LL2 C ]
FABER CASTELL 1/28 Super Business 19R7258 (Variation 3)	25 cm	L / K DF(P%) [ CF(days) CI(R%) C(days) ] D(Int) A \ sh/d £	[ LL1 LL2 C ]
FABER CASTELL 1/22/322 Disponent (Variation 1) 1936	25 cm	ins/ constants KZ [ T val(P%) E(T) ] V L \ ins	[ LL1 LL2 C ]
FABER CASTELL 1/22/322 Disponent (Variation 2) 1938	25 cm	ins/ constants KZ [ T val(P%) E(T) ] V L \ ins	[ LL1 LL2 C ]
FABER CASTELL 1/22/322 Disponent (Variation 3) 1938	25 cm	ins/ constants KZ [ T val(P%) E(T) ] V L \ sh/d £	[ LL1 LL2 C ]
FABER CASTELL 11/22 Disponent 1946	25 cm	ins/ constants KZ [ T val(P%) E(T) ] V L \ sh/d £	[ LL1 LL2 C ]
FABER CASTELL 111/22 Disponent	25 cm	cm / Conversion DF(KZ) [ CF(T) CI (P%) C(T) ] D(Z) L sh/d £	[ LL1 LL2 % C ]
FABER CASTELL 111/22A Disponent with Addiator 1963	25 cm	cm / Conversion DF(KZ) [ CF(T) CI (P%) C(T) ] D(Z) L sh/d £	[ LL1 LL2 % C ]
FABER CASTELL 152/81 1973	25 cm	A DF(KZ) [ CF(T) CIF CI (P%) C(T) ] D(Z) K	L T1 T2 [ S CI C ] D S ST
FABER CASTELL 163/81 Novo-Mentor (1974)	25 cm	A DF(KZ) [ CF(T) CIF CI (P%) C(T) ] D(Z) K	L T1 T2 [ S CI C ] D S ST
FABER CASTELL 307 Disponent System Rohrberg (1932)	25 cm	KZ [ D M(%) ]
FABER CASTELL 322 Disponent Business 1934	25 cm	cm / KZ [ T P% (E)T ] (V)Z	Instructions
FABER CASTELL 322N Disponent 1934	25 cm	cm / KZ [ T P% (E)T ] (V)Z	Instructions
FABER CASTELL 342 Columbus Sys.Rohrberg (Variation 1) 1929	25 cm	cm / Val(KZ) [ Div(day) Val(%) Val(%) Div ] Val(KZ) \ s.d ER(%) £ VP(%)	Instructions
FABER CASTELL 342 Columbus Sys.Rohrberg (Variation 2) 1924	25 cm	cm / Val(KZ) [ Div(day) Val(%) Val(%) Div(day) ] Val(KZ)	Instructions [ s.d £ ]
FABER CASTELL 342N Columbus Sys.Rohrberg 1935	25 cm	s.d £ / Val(KZ) [ Div(day) Val(%) Val(%) Div(day) ] Val(KZ) / cm	Instructions
FABER CASTELL 3/42/342 Columbus	40 cm	s.d £ / Val(KZ) [ Div(day) Val(%) Val(%) Div(day) ] Val(KZ) / cm	Instructions
FABER CASTELL 4/22 Business	50 cm	cm / K A [ B CI C ] D P \ S T	Instructions [ LL1 LL2 LL3]
FABER CASTELL 44/22 Business 1954	50 cm	cm / Conversions P(Int) [ D Val(R%) PP(D) ] SP(Int) L \ s.d £	[ LL1 LL2 % C]
FABER CASTELL 51/22 Disponent 1940	25 cm	Conversions KZ [ T Val(P%) E(T) ] V(Z)	[ LL1 LL2 % C ]
FABER CASTELL 52/22 Schul-Disponent 1938	25 cm	Conversions KZ [ T Val(P%) E(T) ] V(Z)	[ LL1 LL2 % C ]
FABER CASTELL 52/80 Mentor (Variation 1) 1972	25 cm	A KZ(DF) [ T(CF) CIF P%(CI) C ] Z(D) K	cm Instructions ins
FABER CASTELL 52/80 Mentor (Variation 2) 1975	25 cm	A KZ(DF) [ T(CF) CIF P%(CI) T(C) ] Z(D) K	Instructions [ Z N ] N Z
FABER CASTELL 52/81 Novo-Mentor 1972	25 cm	A KZ(DF) [ T(CF) CIF P%(CI) T(C) ] Z(D) K	L T₁ T₂ [ S CI C ] D S ST
FABER CASTELL 57/22 Schul-Disponent (Version 1) 1953	25 cm	cm / Conversions KZ(DF) [ T(CF) Val(P%) E(T) ] V(Z) L	[ LL1 LL2 C ]
FABER CASTELL 57/22 Schul-Disponent (Version 2) 1956	25 cm	cm / Conversions % DF(KZ) [ CF(T) CIVal(P%) C(T) ] D(Z) L	[ LL1 LL2 C ]
FABER CASTELL 63/22 Disponent 1937	12.5 cm	cm / KZ [ T Val(P%) E(T) ] V(Z)
FABER CASTELL 63/22R Addiator Disponent 1938	12.5 cm	cm / KZ [ T Val(P%) E(T) ] V(Z) s.d £
FABER CASTELL 67/22 Disponent 1966	12.5 cm	ins / % DF(P/Int) [ CF(Days) CI(R%) C(Days) ] D(Int)	[ sh/d £ ]
FABER CASTELL 67/22 R Addiator Business 1951	12.5 cm	ins / P(Int) [ D Val(R%) PP(D) ] SP(Int) \ ins	[ sh/d £ ]
FABER CASTELL 67/22 Rb Addiator Disponent 1965	12.5 cm	ins / % DF(P/Int) [ CF(Days) CI(R%) C(Days) ] D(Int) sh/d £
FABER CASTELL 8/30	⌀ 9.5 cm	% D [ C CI ]
JOHANN FABER 180/080 1977	25 cm	A % KZ(DF) [ T(CF) CIF P%(CI) T(C) ] Z(D) K
Farmar's Profit Calulating Rule (Version 1)	? cm	Discount Profit Turnover	Instructions
Farmar's Profit Calulating Rule (Version 2)	? cm	Discount Profit Turnover	Instructions
Farmar's Commercial	? cm	Special Scales	Instructions
Fearns Buyers Calculator	⌀ ? cm	'Total Cost' Quantity %
Fearns Costing and Estimating Calculator	⌀ ? cm	Cost Time 'Hourly Rate'
Fearns Economic Batch Size	⌀ ? cm	Special Scales
Fearns Economic Batch Size Calculator	⌀ ? cm	Special Scales	Instructions
Fearns Economic Order Quantity Calculator	⌀ ? cm	Special Scales
Fearns Purchase Discount Evaluator	⌀ ? cm	Special Scales
Fearnsre-Order Point Calculator	⌀ ? cm	Special Scales
Neal Feay Co. / Cost Reduction Slide Rule Model CR-6	12.5 cm	Special Scales	Special Scales
Neal Feay Co. / Cost Reduction Slide Rule Model LC-6	12.5 cm	Special Scales	Special Scales
Gilson Commercial Calculator	⌀ 12.7 cm	C CI % Day Month Year
Graphic Percentage Calculator	⌀ 15 cm	Number %
Graphic Profit Finder	⌀ 20.2 cm	Number %
Graphic Stock Yield	? cm	Special Scales	[ Instructions ]
Graphoplex 645 Commercial	25 cm	DF [ CF CI C ] D £ s/d Conversions	Instructions [ LL3 LL2 Ll1 C ]
Graphoplex Fiducial	25 cm	LL0 % DF [CF CI C ] D LL3 LL2 LL1	Instructions [ LL01 LL02 LL03 C ]
Greene	⌀ 20 cm	£ s d	Instructions
Hemmi P37	12.5 cm	Rate of Return: 1) interest/cost, 2) profit/selling price, D [ C, CI, Days ] Month/Day	Days, Interest Rate (Daily, Monthly, Annual)
Hemmi 143 Commerce	12.5 cm	A N [ M £ s/d C ] D G	P₁(%) P₂(%) DF [ CF CIF CI C ] D LL2 LL1 %
Hemmi P263 Commerce	12.5 cm	A N [ M £ s/d C ] D G	P₁(%) P₂(%) DF [ CF CIF CI C ] D LL2 LL1 %
Hemmi P265 Business	12.5 cm	A D [ G 0-24 N ] M 0-24	P₁(%) P₂(%) DF [ CF CIF CI C ] D LL2 LL1 %
Hemmi 300	25 cm	cm / Special Scale DF [ CF CI C ] D Special	Instructions
Hemmi 341 Commerce	25 cm	P₁(%) P₂(%) DF [ CF CIF CI C ] D LL2 LL1 %	A N [ M £ s/d C ] D G
Hemmi 402 Business	25 cm	Special Scales	A DF [ CF CIF CI C ] D LL1 LL2
Hemmi 403 Business	25 cm	Special Scales	A DF [ CF CIF CI C ] D LL1 LL2
Hemmi P452	25 cm	ST K A [ B BI CI C] D, P, S, T	LL1 LL2 LL3 DF [ CF CIF % CI C] D L in cm
Henschel 2025	25 cm	cm / q(%) Z(C) [ T(D) M(CI) D(C) K(D) ] L \ ins	Conversions [ £ s d ]
Hono Financial	25 cm	K Special A [ BI CI C ] D Special L	Special Scales
Imperial Slide Rule System	25 cm	s d [ d s £ N ] N £	In Nsq [ Nsq In Ft N ] N Ft
IWA 1068	⌀ 10 cm	Special Scales	Special Scales
IWA 1098	⌀ 18.5 cm	M [ E H ] [ Z(%) ] X	Instructions
IWA 1652	⌀ 12 cm	D [ C % ] C [ % ]	Instructions
IWA 10201	32 cm	Special Scales	Special Scales
IWA 10254	25x14 cm	Special Scales	Special Scales
IWA 10400 Euro Calculator	5.4x8.6 cm	Special Scales	Special Scales
IWA 16070	⌀ 21 cm	C [ D % C ] D
Japan Emblem 1071	25 cm	% DF [ CF CI C ] D Conversions	£ s/d
Jorgenson Universal Circle Profit Calculator	Cylindrical	Special Scales
K&E 4095-3 Merchant	25 cm	Special DF [ CF Special Special C ] D Special
K&E Percent Of Accuracy Estimate Slide Rule	? cm	Special Scales
Klawun 333S (Nestler)	25 cm	cm / K DF [ CF(KZ) T Val(P%) E(T) ] V(Z) A	Instructions [ S L T ]
Klawun 1001 Sys. Klawun 1935 (Faber)	25 cm	cm / KZ [ T P% E(T) ] V(Z)	Instructions
Klawun 1001/S	25 cm	cm / KZ [ T Val(P%) E(T) ] V(Z)	Instructions [ sh/d £ ]
Klawun 1001C	25 cm	cm / KZ [ T % T ] Z	[ sh/d £ lg ]
Klawun 1001G	50 cm	cm / KZ [ T Val(P%) E(T) ] V(Z) \ ins	Instructions [ sh/d £ ]
Klawun 1001J	50 cm	KZ [ T Val(P%) E(T) ] V(Z)	[ sh/d £ lg ]
Klawun 1001T Sys. Klawun Mercator 1963	12.5 cm	% KZ [ T K(%) E(T) ] V(Z)	[ sh/d £ ]
Lange log-Calculator	⌀ 20.0 cm	% D [ % ]	% D [ C ]
Lawrence 10-F Pricing and Inventory	10 ins	Special Scales	Instructions
Lawrence 12-J Pro-Rater	12 ins	Special Scales	Data Table
Lee's Amortizer	17.5 cm	Special Scales
Lee's Profitizer	28 cm	Special Scales	[ Special Scale ]
LOGA Calculator A.G.: 30RC	⌀ 12.5 cm	D [ C CI % ]	£ Special Scales
LOGA Calculator A.G.: 30RZh	⌀ 12.5 cm	D [ C CI % ]
LOGA Calculator A.G.: 75EA	⌀ 30 cm	Special ScalesD [ C Special Scales ]
LOGA Calculator A.G.: 75RZ	⌀ 30 cm	D [ C CI % Conversions ]
LOGA K150d	12.5 cm	Conversions A [ B CI D ] C Conversions	K D [ C A ] B L
LOGA K300d	30 cm	Conversions A(Z) [ B(T) % BI(D) D ] A(K) Conversions	LL1 DF [ CF CIF C ] D LL2
Logomat 2300	⌀ 9.2 cm	Removable inner disks with currency, interest, and % scales
Logomat 3301	⌀ 9.0 cm	D % %
Logomat 3303	⌀ ? cm	D % %
Logomat 3307	⌀ 11 cm	D % %	Details
Logomat 3501 Prozent Rechner	⌀ 9 cm	D % %
Logomat 3503 Prozent Rechner	⌀ 12 cm	D % %
Logomat 3701	9 x 12 cm	D DM %
Logomat 4206	⌀ 7 cm	Currency Convertor
Logomat Calculator Blue	9.0 x 12.0 cm	D % %
Logomat Calculator Green	9.0 x 12.0 cm	D %
Logomat Calculator Red	⌀ 8.7 cm	D % %
Logomat Cursboy	5 x 7 cm	Currency Convertor
Logomat Preisprüfer	9.6 x 12.9 cm	Special Scales	Calendar
Lord's Calculator	⌀ 7 cm	D B C IA %
Maclean Finance Calculator	13 x 13 cm	£ s d [ C CF ] D
Maillie Simple Interest Rate Calculator	⌀ 8.9 cm	Special Scales	Special Scales
Marcantoni 12-5C	12.5 cm	% D [ C CI % ] D L	£ s d
Mear Financial Calculator	⌀ 19.5 cm	Special Scales
Mear Multiple Payment and Single Sum Calculator	⌀ ? cm	Special Scales
Mercura La Regle Commerciale	⌀ 9 cm	C % %	Instructions
Mercura 5.5 - 7 RC	⌀ 9 cm	C % %	C % %
Mercura Francs & Euros	⌀ 11 cm	D [ C % Special Scales ]
Nestler 7	25 cm	% Z [ T M D% ] K L	Instructions [ £ s d ]
Nestler 7 Version	25 cm	Z [ T CI M D% ] K
Nestler 7/52	25 cm	KZ [ T R(%) E(T) ] V(Z)	Instructions
Nestler 11ZK	12.5 cm	cm / Z(D) T(C) R(CI) D(%) K(C)
Nestler 40 (Version 1)	25 cm	cm / q(%) Z(D) [ T(C) CI M D(%) ] K L	Instructions [ £ s d ]
Nestler 40 (Version 2)	25 cm	cm / Z [ T M D(%) ] K \ins	Instructions [ L s d ]
Nestler 40 (Version 3)	25cm	cm / qZ [ T CI M D(%) ] K L \ins	Instructions [ £ s d ]
Nestler 40 (Version 4)	25cm	cm / C [ D M I ] A D \ins	Instructions [ L s d ]
Nestler 40 (Version 5)	15cm	cm / Z(D) [ T(C) CI Mm D(%) ] K \ ins	Instructions [ £ sh d ]
Nestler 40 (Version 6)	25cm	cm / Z(D) [ T(C) R(CI) D(%) ] K \ ins	Instructions [ £ s d ]
Nestler 40 (Version 7)	25cm	cm / Z(D) [ T(C) R(CI) D(%) ] K	[ LL1, LL2, LL3 ]
Nestler 130	⌀ 13 cm	A % D [ C CI ]
Nestler 0140	12.5 cm	ins DF [ CF CI(%) C ] D \ cm
Nestler 0400	25 cm	cm / KZ [ T R% E(T) ] V(Z)	Instructions [ LL1 LL2 LL3 ]
Nestler Mercur 0401	25 cm	cm / % DF [ CF CI C ] D Conversions	Data [ LL1 LL2 C ]
Nestler Hanseat 0408	25 cm	DF(KZ) [ CF(T), CI(%) C(T) ] D(Z)
Nestler 0409	25 cm	cm / DF(KZ) [ CF(T), R(CI)(%) E(T)(C) ] V(Z)(D)	[ LL1 Ll2 LL3 ]
Nestler Circular No Name	⌀ 9.5 cm	A % D ] C CI
Norma Merkuria 100	⌀ 9.5 cm	D [ C % Conversion ]	Instructions
Norma Merkuria 190	⌀ 19 cm	D [ C CI % % Conversions
Novotni Merchants Perecentage Rule	19 cm	Price [ % Cost ] 'Cost per Quantity'
Paisley	20 ins	Special Scales
Parisian Novelty Company: Cost and Selling Price	? cm	'Cost per Dozen' 'Cost per Unit' [ 'Cost Selling Price' % ] 'Selling Price per Unit'	Cost %
Parisian Novelty Company: Cost and Selling Price	⌀ 10 cm	'Profit on Costa C ' 'Profit on Selling'(%)
Parisian Novelty Company: Profit Indicator	⌀ 10 cm	'Profit on Costa C ' 'Profit on Selling'(%)
Pickett 21 Real Estate Costimator	? cm	Special [ Special % % ] Special
Pickett 22 Real Estate Costimator	? cm	Special [ Special % % ] Special
Pickett 23 Real Estate Costimator	12.5 cm	Special [ Special % % ] Special	K A [ B CI C ] D L
Pickett 101-C Dial Rule (1964-1975)	⌀ 10.2 cm	C CI A A^F L F^A LL2 LL1 DS DT M	C, S, ST, T, Fractions-Decimal
Pickett 103ES Mark-up Calculator	⌀ 10.2 cm	C CI A A^F L F^A fraction-decimal	Quantity, Cost Basis, Selling Price (mark up)
Pickett 104C Profit Calculator	⌀ 20.3 cm	% % Price %
Pickett 105C Profit Calculator	⌀ 10.0 cm	% % Price %
Pickett 201-S Economic Purchase	25 cm	K A [ B CI C ] D L	R [ C, S ] Q
Pickett 400-ES	12.5 cm	K A [ B CI C ] D L	R% DF [ CF R% C ] D C%
Pickett N400	12.5 cm	K A [ B CI C ] D L	R% DF [ CF R% C ] D C%
Pickett 510 Business and Finance Rule	25 cm	RF [CF C% C ] R C%	S1, S2 [ C² L CI C] D S3
Teledyne Post 1426 Business (Hemmi P452)	25 cm	LL1 LL2 LL3 DF [ CF CIF % CI C] D L in cm	ST K A [ B BI CI C] D P S T
Post 1444-D Commerce	12.5 cm	ins // A [ B CI C ] D K	Data [ S L T ]
Prestolog	⌀ 13 cm	Special Scales
Reiss 1143 Stellfix K	? cm	b% Z% [ CF %-Auf C ] D	[ A K ]
Richardson Business Man	25 cm	DI D1 [ D2 CI % ] D3 LOG
Richardson Direct Reading Merchant	25 cm	D1 [ D2 CI % ] D3
Ricoh 555 Sales-Ace	12.5 cm	DF [ CF Conversion CI ] D Conversion	[ P1 P2 % ]
Ricoh 777 Stock	25 cm	Special Scales
Rotarule AA	⌀ 13 cm	K A D [ C CI CIF S C ST T CT G (2 scales) B F/i ]	L LL% LL1 LL2 LL3 C [ V1 V2 DLL D ]
Roulette X	⌀ 24 cm	D D [ C Conversions ]
Sears Roebuck Merchant's Calculator	30 cm	Special Scales
Standardgraph 900	⌀ 12 cm	% D [ C CI Conversions ]
Tavernier Gravet BEGHIN P.GENOT 30	28 cm	cm / DF [ CF % CIF C ] D	Instructions
Tecnostyl 41/C	12.5 cm	cm / A [ B % h st C ] D	[S ST T ]
Technial Sales Emblem 1071	25 cm	DF [ CF CI C ] D Conversions	£ s/d
Troger	⌀ 30 cm	D [ C % ]
ULTIMO Interest Rate Calculator	13.5 x 27.0 cm	[ D 3.6 DIF ] [ C ]
Unique Caterers and Confectioners	10 ins	Special [ Special % ] s/d £ s/d
Unique Commercial	10 ins	H K M [ N (Discounts Scale) R(CI) C ] D U V	Table for converting shillings and pence into pounds
Unique Costing	10 ins	£ s/d s/d [ B Time ] £
Unique Craft	10 ins	Cost [ Price Width ] Length
Unique Interval Calculator	10 ins	Year [ Days C ] D
Unique Monetary	10 ins	£ d [ B % C ] D £
Unique Wilkinson Sugar	10 ins	s [ s C ] D
Unknown Simple Interest Rate	⌀ 8.9 cm	Interest-Cost [ Mount-of-Loan \ Centre-%-selectors	Price
UTO 631U	12.5 cm	L K A [ B T ST S ] D DI P S	LL01 LL02 LL03 DF [ CF CIF %(CI) C(T) ] D LL3 LL2 LL1
UTO 661	12.5 cm	cm / K DF [ CF %(CI) C(T) ] D A	[ S S&T T ]
UTO 931U	25 cm	LL01 LL02 LL03 DF [ CF(T) CIF % CI C(T) ] D LL3 LL2 LL1	T₂ L K A [ B T ST C D ] DI P S
Waltham Profit Finder	⌀ 14 cm	Number Mark-Up Selling-Price Profit
W & G 465 Dualface	25 cm	L A [ B CI C ] D K(Cu)	Conversions [ R P(%) D² D³ ] D¹ CC
Whitehead Hoag Collection Period Calculator	18.5 cm	A [ B } C	Instructions
Whitehead Hoag Net Price Calculator	? cm	D [ C % ]	Instructions
Wolters-Noordhoff JE 650	25 cm	A % KZ(DF) [ T(CF) CIF P%(CI) T(C) ] Z(D) K	L T₁ T₂ [ S' CI C ] D S ST