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drafting pen

drafting pen

Keuffel & Esser Company
before 1969
Leroy adjustable scriber

Leroy adjustable scriber

Keuffel & Esser Company
1966
Leroy lettering template 3240-2000C

Leroy lettering template 3240-2000C

Keuffel & Esser Company
Leroy lettering template capitals + numbers 3270-1000C

Leroy lettering template capitals + numbers 3270-1000C

Keuffel & Esser Company
Leroy template 61-0350 1000C

Leroy template 61-0350 1000C

Keuffel & Esser Company
parallel straight edge

parallel straight edge

Keuffel & Esser Company
circa 1930
parallel straight edge

parallel straight edge

Keuffel & Esser Company
circa 1930
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The Collection of Historical Scientific Instruments
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