caliper:1

Argent, a compass sable, on a chief embattled azure a sword fesswise reversed argent. David du Lac (10/1979 East)

Argent, a pair of compasses and a bordure azure. Ketill rauðskeggr (11/2010 Caid)

Argent, a pair of compasses and in base a cross bottony all within a bordure embattled gules. Dun Carraig, Barony of (2/2002 Atla)

Azure, on a fess wavy between a compass and a sheaf of three arrows Or three trefoils vert. Colin Wynthorpe (5/1985 Caid)

Checky gules and argent, a compass sable and on a chief argent a cross sable. Hugh Prescott (4/1994 Midd)

(Fieldless) A pair of compasses Or. Northshield, Kingdom of (1/2005n)

Gules, a pair of compasses between three fleurs-de-lys Or, a bordure gyronny Or and sable. Findlaech MacAlasdair (11/2000 Atla)

Gules, a pair of compasses in base between its arms a compass rose, a bordure embattled argent. Stierbach, Barony of (10/1999 Atla)

Gules, an osprey rising contourny argent maintaining in its sinister talon a pair of dividers, an orle Or. Laurlein von Orlamünde (9/2011G)

Gules, two bars wavy and in sinister chief a pair of compasses argent. Jon i Visby (8/2008 East)

Or, a pair of compasses sable and in base a phoenix gules. Leon Jeronimo Suarez (11/2002 Meri)

Or, a single-arched bridge and on a chief sable a pair of calipers Or. Ponte Alto, Barony of (9/2007 Atla)

Per chevron azure and gules, on a chevron between two crosses formy and an eagle argent a pair of compasses sable. Wojciek z Krakowa (1/2004 East)

Per chevron sable and vert, on a chevron between a wolf's head erased ululant contourny and a raven's head erased argent, a pair of compasses azure. Thomas MacCay of Castle Campbell (3/2012 East)

Per pall inverted vert, azure, and ermine, an open book argent bound sable and a pair of compasses argent. Gyles of Wendelbury (12/2010 Trim)

Purpure, two dolphins urinant respectant argent and a pair of compasses Or. Frederick Nüss von Baden (1/2012 Caid)