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Welch classroom demonstration slide rule
2013.013.018
Welch
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Post Binary circular slide rule
2013.013.022
Post Slide Rule Company
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Pickett Log-Log overhead projection linear slide rule
2013.013.024
Pickett & Eckel
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Sterling Precision linear slide rule (2)
2013.013.025
Sterling
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Gerber Variable Scale model TP007200B
2013.013.027
Gerber Scientific Instrument Company
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Pickett Log-Log overhead projection linear slide rule
2013.013.028
Pickett & Eckel
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Keuffel & Esser Deci-Lon 5 pocket slide rule
2013.013.031
Keuffel & Esser Co.
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Halden Calculex patent circular slide rule
2013.013.032
J. Halden & Co., Ltd.
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Pickett Microline 120 linear slide rule
2013.013.033
Pickett & Eckel
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Keuffel & Esser 4088-3 linear slide rule
2013.013.034
Keuffel & Esser Co.
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unidentified maker linear slide rule
2013.013.035
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Pickett N3-ES Power Log Exponential Log Log Dual Base linear slide rule
2013.013.037
Pickett & Eckel
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Pickett N16-ES Electronic slide rule
2013.013.038
Pickett & Eckel
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Post 1462 linear slide rule
2013.013.039
Post Slide Rule Company
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Otis King's Pocket Calculator Scale No. 414 and 423 cylindrical slide rule
2013.013.040
Otis King
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Post 1462 linear slide rule
2013.013.041
Post Slide Rule Company
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Faber-Castell 2/83N Novo Duplex linear slide rule
2013.013.043
Faber Castell
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Leningrad GOST 5161-57 linear slide rule
2013.013.045
Leningrad Factory
1972
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Fowler's Long Scale Calculator stopwatch-type slide rule
2013.013.047
Fowler & Co. Calculator Specialists
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Aristo Junior Overhead Projection linear slide rule
2013.013.048
Aristo
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Faber-Castell 52/82 projection slide rule
2013.013.049
Faber Castell
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Pickett 101-C "dial rule" circular slide rule
2013.013.057
Pickett & Eckel
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Pickett N600-ES Log Log Speed Rule
2013.013.058
Pickett & Eckel
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Post 1491 linear slide rule
2013.013.059
Post Slide Rule Company; Hemmi Slide Rule Co.
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Post 1461 linear slide rule
2013.013.061
Post Slide Rule Company; Hemmi Slide Rule Co.
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Pickett Executive Synchrolog Power Log Exponential Log Log Dual Base X-3 linear slide rule
2013.013.063
Pickett & Eckel
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slide rule tie clip
2013.013.064
Vernon
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Keuffel & Esser 4080-3 linear slide rule
2013.013.066
Keuffel & Esser Co.
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Pickett overhead Trig slide rule
2013.013.067
Pickett & Eckel
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Pickett N4-T Vector-type log log dual-base speed rule linear slide rule
2013.013.068
Pickett & Eckel
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Post Versalog 1461 slide rule
2013.013.072
Post Slide Rule Company; Hemmi Slide Rule Co.
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Faber-Castell Reitz-N 57/88 slide rule
2013.013.073
Faber Castell
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Nupro-branded Concise CTCS-552 circular slide rule
2013.013.075
Nuclear Products Company; Sama and Etani; Concise
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Pickett N3-ES power log exponential log log dual base linear slide rule
2013.013.076
Pickett & Eckel
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Pickett ED-26 projection slide rule
2013.013.077
Pickett & Eckel; Projection Optics Company
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Ricoh No. 150 linear slide rule
2013.013.078
Ricoh
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Pickett 3 Deci Multiphase Log Log slide rule
2013.013.079
Pickett & Eckel
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Pickett N4-ES Vector-type Log Log Dual Base Speed Rule linear slide rule
2013.013.080
Pickett & Eckel
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Pickett N904-T Trig and Decimal Keeper Speed Rule linear slide rule
2013.013.081
Pickett & Eckel
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Pickett N500-ES HI Log Log linear slide rule
2013.013.082
Pickett & Eckel
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Faber-Castell model 12/82 Precision Slide Rule
2013.013.085
Faber Castell
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Keuffel & Esser Deci-Lon 5-inch linear slide rule
2013.013.087
Keuffel & Esser Co.
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Post Overhead 1447DP slide rule
2013.013.089
Post Slide Rule Company; Hemmi Slide Rule Co.
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Gerber Variable Scale
2013.013.091
Gerber Scientific Instrument Company
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Dietzgen 1741 Novo-Biplex-Style Decimal Trig Type Log Log overhead slide rule
2013.013.092
Dietzgen
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Keuffel & Esser Overhead Projection Deci-lon 68 1955 slide rule
2013.013.093
Keuffel & Esser Co.
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Pickett N500-ES Log-Log classroom demonstration slide rule
2013.013.094
Pickett & Eckel
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slide rule tie clip
2013.013.096
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Ruler to Measure Waterline Near Shore, Hudson River, NY
2014.028.s1839
Klein, Martin
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Two Men near Ruler to Measure Waterline, Hudson River, NY
2014.028.s1876
Klein, Martin
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