The Monroe Calculator Models K, KA, and L
Автор: Jaap Scherphuis
Загружено: 2019-09-16
Просмотров: 3563
The Monroe Calculator is a mechanical calculator that began production from 1914, but only became successful with the introduction of the model K in 1921. Model L followed in 1929, and variants remained in production till the 1960s. In this video I demonstrate the model K, and model L, as well as the electrically driven model KA.
Video of an older model, the model F:
• The model F Monroe Calculator
For more information on the Monroe Calculator, as well as the other mechanical calculators in my collection, visit my website:
https://www.jaapsch.net/mechcalc/
0:00 Introduction, History
1:05 Model K
1:29 Addition
2:13 Clearing
2:46 Subtraction
3:38 Multiplication
5:13 Counter
6:32 Item Count
9:00 Mechanism
12:46 Model L
13:35 Serial number
13:53 Model designations
15:13 Model L Item Count
15:42 Model KA
16:20 Crank
16:39 Model KA comparison
17:11 Bell
18:35 Model KA add subtract
18:57 Decimal markers
19:55 Outro
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