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