(Q50861315)
Statements
2 references
1730s
1 reference
0 references
A Merchant Captain (possibly John Elton) with Elton's Quadrant (English)
1 reference
1 reference
2 references
1 reference
1 reference
BHC3128
1 reference
101.5 centimetre
1 reference
127.0 centimetre
1 reference