Related Clues:

• Tool with a bubble
• Tool for checking horizontality
• Amount of whisky, say, that's useful for evening out
• Handyman should have his enthusiasm well-balanced
• Flat-finding agency
• What told builder if someone had been at his whisky?
• Tool to get even with drink
• Device for checking whether a surface is horizontal
• What a builder might use to maintain equanimity?
• Horizontality checker with a bubble
• What surveyor may use in flat after ghost is seen
• Means of checking horizontality
• Device showing if someone's been at the gin?
• Basic tool for carpenters and surveyors