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2024.39.9
Halden Calculex

2024.39.8
Type D-4 Time Distance Computer

2024.39.76
Mystery Item?

2024.39.75
Parallel Ruler

2024.39.74
Lufkin No. 372 Caliper Rule

2024.39.73
12" Folding Ruler

2024.39.72
Preston No. 5111 Folding Ruler

2024.39.71
4 ft Folding Ruler

2024.39.70
Stanley Sweetheart No. 66 1/2 Folding Ruler

2024.39.7
Instructions for The Binary Slide Rule

2024.39.69
Golden LCD Calculator

2024.39.68
Your HP Financial Calculator: An Introduction to Financial Concepts and problem Solving

2024.39.67
Hp-38E Owner's Handbook and Programming Guide

2024.39.66
Casio SF-5580

2024.39.65
Replacement Cost Estimator

2024.39.64
Toshiba LC-895 Case

2024.39.63
Toshiba LC-895

2024.39.62
Texas Instruments BA-III Case

2024.39.61
Texas Instruments BA-III

2024.39.60
Monroe Model LA

2024.39.6
Gilson Binary Slide Rule Case

2024.39.59
Friden Model C10

The Lightning Adding Machine
2024.39.58
The Lightning Adding Machine

2024.39.57
Directions For Use of the Addometer

2024.39.56
Addometer Case

Addometer Model A
2024.39.55
Addometer Model A

2024.39.53
Suanpan

2024.39.52
Soroban

2024.39.51
Texas Instruments SR-51A Case

2024.39.50
Texas Instruments SR-51A

2024.39.5
Gilson Binary Slide Rule

2024.39.49
Canon Card FC-53 Case

2024.39.48
Canon Card FC-53

2024.39.47
How to use Soroban

2024.39.46
Tomoe Soroban

2024.39.45
Abacus Guide Book

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