For instruction in the use of slide rules, please visit this page covering the Mk IV Slide Rule.  They are covered in the Small Arms Training manuals.


Mk. 1

  • Cat No. C1/BD 2562, List of changes A 9393, RULES, SLIDE, M.G., Mk. 1 – With cord and bead; for use with Mk. 1 Vickers .303-in. M.G. and Mk. 7 ammn.

Is ivory-faced, approximately 11-inch long by 2-in. wide. This has now been superceded by the Mk. III pattern (1940).

B.J.H. & Co Ltd. 1928


Mk. I (Aust)

W.H.H. – In Web Case


Mk. 2

The Mk. II rule, made of duralumin and similar in design to the Mk. III pattern, is special to the requirements of India.


Mk. 3

  • Cat No. C1/BD 2564, List of changes A 9393, RULES, SLIDE, M.G., Mk. 3 – With cord and bead; for use with Mk. 1 Vickers .303-in. M.G. and Mk. 7 ammn.

Is of boxwood, approximately 6-in. long by 3-in. wide, with 2 slides. A cord 24-in. long, having a bead at the free end, is attached to the rule for the purposes of graticulation.

W.H.H. 1940 – In Leather Case

 


Mk. 4

  • Cat No. C1/BD 2565, List of changes B4265, RULES, SLIDE, M.G., Mk. IV – With cord and bead. For use with Mk. VIII ammunition

Rule, Slide, M.G., Mk. IV (.303 Vickers M.G. for Mk. VIII Ammn.) R.E. Co. Ltd. 1944 – In Web Case dated 1941

Rule, Slide, M.G., Mk. IV (.303 Vickers M.G. for Mk. VIII Ammn.) Alumilite 1941 – In Web Case dated 1941

Rule, Slide, M.G., Mk. IV (.303 Vickers M.G. for Mk. VIII Ammn.) B.E.N. Co. Ltd. 1967 – In Web Case dated 1942


Cases

  • Cat No. C1/BD 0161, List of changes A 1325, CASES, RULE, SLIDE, M.G., Mk. 1 – With web shoulder strap; for Rule, slide, M.G., Mk. 1

CollectionInsurance179

  • Cat No. C1/BD 0162, List of changes A 9393, CASES, RULE, SLIDE, M.G., Mk. 2 – With web shoulder strap; for Rule, slide, M.G., Mk. 1
    For carriage of the Mk. I rule, is of webbing with a web shoulder strap.
  • Cat No. C1/BD 0163, List of changes A 9393, CASES, RULE, SLIDE, M.G., Mk. 3, No. 1 – For cavalry

No. 1 (leather) and No. 2 (web), for carriage of the Mk. III rule, are attached respectively to cavalry or infantry equipment.

CollectionInsurance176

  • Cat No. C1/BD 0164, List of changes A 9393, CASES, RULE, SLIDE, M.G., Mk. 3, No. 2 – For infantry

No. 1 (leather) and No. 2 (web), for carriage of the Mk. III rule, are attached respectively to cavalry or infantry equipment.

CollectionInsurance171

  • Cat No. C1/BD 6202, CASES, RULE, SLIDE, M.G., Mk. 4 – For Rule, slide, M.G., Mk. 4

Sources: