General Information

Serial #

283

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Steel body/ glass window/ paper scale/ brass binding posts.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

N/A

Width

N/A

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Energy-electric

Category

Measurement

Sub-Category

N/A

Manufacturer

AKA

Victor

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

Typical meter used in Canadian industry.

Function

Measures voltage for X-ray equipment in inches spark.

Technical

Iron vane, moveable iron instrument (ref. 3) used with early X-ray machines. This was a low cost but sturdy meter. Iron vane mechanisms were among the cheapest, and do not have scales proportional to the measured quantity. They are however resilient when overloaded and good for quick readings. Most meters from its period have small glass screen whereas much of the face is made of metal. This meter has face made entirely of glass in the style that becomes more popular years later. The greenish colour of the textured film may have been popular in hospitals at the time as soothing to patients, which would help to explain this choice of design. The term "Coolidge" on the scale refers to the Coolidge tubes that this meter was used for. They were filled with hydrogen gas because of its properties.

Area Notes

Unknown

Details

Markings

Markings on the paper scale: 'SPARKMETER/ HYDROGEN/ INCHES SPARK/ COOLIDGE/ CALIBRATED AT 10 M.A. & COMPENSATED AT 70 K.V./ VICTOR [Company logo]/ SNOOK/ TYPE Y/ No 272240' Markings at back: '283/ 657 [? barely legible]'

Missing

N/A

Finish

Unknown

Decoration

N/A