Jaap Scherphuis | A Lab Counter by the Denominator Company @jaapsch2 | Uploaded April 2017 | Updated October 2024, 2 hours ago.
This lab counter was made by the Denominator Company in around 1948. The company still exists today and makes various counters including a modern version of this lab counter.
To see my collection of Mechanical Calculators, please visit my website:
jaapsch.net/mechcalc
This lab counter was made by the Denominator Company in around 1948. The company still exists today and makes various counters including a modern version of this lab counter.
To see my collection of Mechanical Calculators, please visit my website:
jaapsch.net/mechcalc