Gunner's callipers

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Gunner's callipers, part of the drawing instrument or mathematical instrument set.

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ID:	NAV0667.3
Type:	Gunner's callipers
Display location:	Not on display
Creator:	Unknown
Date made:	Unknown
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Overall: 2 mm x 173 mm x 43 mm
Parts:	Drawing instrument set Parallel rule (NAV0667.1) Sector (NAV0667.2) Gunner's callipers (NAV0667.3) Dividers (NAV0667.4) Drawing instrument (NAV0667.5) Dividers (NAV0667.6) Pencil head (NAV0667.7) Drawing instrument (NAV0667.8) Pecked line delineator (NAV0667.9) Drawing instrument (NAV0667.10) Drawing instrument (NAV0667.11) Drawing instrument case (NAV0667.12)