- Country
- United States of America (USA)
- Manufacturer / Brand
- Weston Electrical Instrument Co.; Newark, N.J.; (Jewell Electrical Instrument Co.; Chicago, IL)
- Year
- 1899 ?
- Category
- Service- or Lab Equipment
- Radiomuseum.org ID
- 234260
-
- alternative name: Jewell
Weston 155 amperemeter - scale close-up
Scala
- Wave bands
- - without
- Loudspeaker
- - - No sound reproduction output.
- Material
- Wooden case
- from Radiomuseum.org
- Model: AC-Ammeter 155 - Weston Electrical Instrument
- Shape
- Tablemodel, with any shape - general.
- Dimensions (WHD)
- 180 x 170 x 82 mm / 7.1 x 6.7 x 3.2 inch
- Notes
-
Portable AC Ammeter Single Range 5 A.
Instruments such as this were used by trained technical/scientific staff for precision laboratory measurements of electrical current, and as secondary standards for calibrating other meters. The mirrored scale makes it easier to read the instrument to a given accuracy by enabling the user to eliminate parallax errors. This particular instrument was specified to be accurate to ± 0.5%.
These ammeters are arranged to be connected directly in the circuit in which the current is to be measured. Other range available are: 1, 2, 3, 5, 10, 15, 25, 50, 75, 100 and Double Range: 1/5, 2/1, 5/2.5, 10/5.
- Net weight (2.2 lb = 1 kg)
- 1.8 kg / 3 lb 15.4 oz (3.965 lb)
- Price in first year of sale
- 31.25 USD
- Mentioned in
- -- Original-techn. papers.
- Author
- Model page created by Renato Capasso. See "Data change" for further contributors.
- Other Models
-
Here you find 189 models, 164 with images and 101 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Weston Electrical Instrument Co.; Newark, N.J.; (Jewell Electrical Instrument Co.; Chicago, IL)
Collections
The model AC-Ammeter is part of the collections of the following members.