BS MA 2-1:1985
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Magnetic compasses and binnacles Specification for class A magnetic compasses, their binnacles and azimuth reading devices (including test procedures)
Hardcopy , PDF
20-08-2013
English
29-11-1985
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Foreword
Committees responsible
Specification
Section one. General
1.1 Scope
1.2 Definitions
1.3 Test certificates
Section two. Compasses, bowls and gimbals
2.1 General
2.2 Construction and materials
2.3 Gimballing
2.4 Compass bowl
2.5 Compass card bearing
2.6 Lubber marks
2.7 Directional system
2.8 Accuracy
Section three. Azimuth reading devices
3.1 Groups of azimuth devices
3.2 Marking
3.3 Materials
3.4 Mounting upon the compass
3.5 Adjustment of the spirit level
3.6 Field of view and range of altitude
3.7 Accuracy
3.8 Shadow pin
3.9 Pelorus
Section four. Binnacles and their correcting devices
4.1 General
4.2 Binnacles
Appendices
A. Type test and individual test certificate
B. Type test certificate for bearing instruments
C. Type test certificate for binnacles
Tables
1. Permissible angular error
2. Bearing error (difference from the bearing on the
horizon)
3. Bearing accuracy
Figure
1. Magnetic moment of class A liquid compasses
(minimum values)
Gives requirements for class A magnetic compasses, their binnacles and azimuth reading devices. Includes marking details, type test and individual test certificate for compasses, for bearing instruments and for binnacles. Illustrates magnetic moment of class A liquid compasses (minimum values).
| Committee |
EPL/80
|
| DevelopmentNote |
Supersedes 84/78985 DC, BS MA2-1(1969), BS MA2-5(1972), BS MA2-6(1972) and BS MA2-7(1972) (08/2005) Reviewed and confirmed by BSI, October 2008. (09/2008)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| Supersedes |
| Standards | Relationship |
| ISO 2269:1992 | Similar to |
| BS MA 2-2:1969 | Magnetic compasses and binnacles Class B instruments |
| BS MA 2-8:1985 | Magnetic compasses and binnacles Specification for transmitting systems and off-course alarms for class A magnetic compasses |
| BS MA 2-4:1985 | Magnetic compasses and binnacles Glossary of terms |
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