Manufacturer:	Blundel Harling
Country of Manufacture:	England
Type:	Pilot Balloon Mark 5
Number:	4053/69
Date of Manufacture:	1969?
Scales: (Front)	Log, Cos, Sin [C C Graticule] Secant², Tan
Scales: (Back)	None
Number of Scales:	8
Gauge Points:
Slide Rule made from:	Plastic
Cursor made from:	4 Plastic
Cursor Lines:	1 on each cursor
Overall Length of Rule:	63.2 cm
Length of Scales:	59.6 cm
Width:	6.2 cm
Depth:	1.2 cm
Weight:
Acquired from:	Sean Clarke
Date:	March 2004
Condition:	Good
Accessories:	Wooden Case (Medium Condition) Instruction Book (English)
Comments: