General Information

Serial #

N/A

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

Round flat black synthetic disks revolve around silver metal centre; silver metal locking screw; clear synthetic indicator arms. Printed text and spiral scales are pale ivory in colour: NB- this may be radium paint, allowing instrument to be read in dim light/darkness.

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

1.8 cm

Thickness

N/A

Weight

N/A

Diameter

21.5 cm

Volume

N/A

Lexicon

Group

Aviation

Category

Navigation instruments & equipment

Sub-Category

N/A

Manufacturer

AKA

Cruver

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

Worldwide

State/Province

Unknown

Period

This type produced for use in 1944/ WWII. This example may be new/unused.

Canada

Unknown

Function

Unknown

Technical

Uses temperature and barometric pressure readings to determine true altitude.

Area Notes

Unknown

Details

Markings

Markings on calculator front includes "COMPUTER, ALTITUDE CORRECTION/ AN 5837-1 MFRS. PART NO. C 1920/ ORDER NO. (11-107) 44-10337/ CRUVER MANUFACTURING CO." Markings on reverse include: "INSTRUCTIONS FOR USING ALTITUDE CORRECTION COMPUTER/ "THIS COMPUTER GIVES TRUE ALTITUDE ABOVE A PLATEAU FROM INDICATED/ VALUES."/ 1. SET THE CLAMPING ARM (P.A.) ON THE PRESSURE ALTITUDE OF THE PLATEAU/ (OR TAKE-OFF LEVEL.)/ 2. SET THE FREE ARM (degrees C.) TO THE MEAN OF THE TEMPERATURE AT THE PLATEAU AND THE/ TEMPERATURE ALOFT./ 3. THE LIGHT FIGURES (BLACK BACKGROUND) UNDER THE FREE ARM INDICATOR LINE AND THE/ BLACK FIGURES (LIGHT BACKGROUND) UNDER THE CLAMPED ARM ARE CORRESPONDING TRUE AND/ INDICATED VALUES ABOVE PLATEAU LEVEL." "AN/0286" stamped in off-white ink, below printed instructions.

Missing

Appears complete.

Finish

Round flat black synthetic disks revolve around silver metal centre; silver metal locking screw; clear synthetic indicator arms. Printed text and spiral scales are pale ivory in colour: NB- this may be radium paint, allowing instrument to be read in dim light/darkness.

Decoration

N/A