|Name and Model Number||NESTLER |
System MOISSON Nr. 0374
|Country of Origin||Germany|
|Date of Manufacture|
|Front Scales||7 special scales (see further)|
|Type of Rule||Slide Rule|
|Construction||Celluloid on wood|
|Area of Use||Electrical|
|Comment||This model was developped for radio engineers (Funktechniker) and meant to calculate electronic circuits using the Nagaoka and Thomson formulae. According to Guus Craenen this model was produced as from 1955 to 1966. There was also a German version named Nr. 0373 Funktechnik.
There are seven scales, all on the front side:
Scale ω: pulsation.
Scale L: self induction.
Scale C: capacity.
Scale D/l: ratio between the coil diameter and its length.
Scale D⋅n1: coil diameter multiplied by the number of turns.
Scale λ: wavelength.
Scale F: frequency.
|Donor||Photo from a collection in Belgium|
(Click Picture for Details)
|In conjunction with our 'donors' we assign a rarity rating to each item, based on the system devised by Herman van Herwijnen|
|(1929 - 2004), renowned Dutch collector, author, and creator of Herman's Archive, a collection of 5,000 slide rule images on CD.|
|• RR = Rare - 1 of 25 collectors has one; it may take a year to find an example in the marketplace.|
|• RRR = Very Rare - only a few known to collectors; may be several years before it comes up for sale.|
|• RRRR = Extremely Rare - a museum piece; unlikely that an example will come up for sale.|