Amazon has 9" Johnson Level & Tool Orange Torpedo Level (1402-0900) on sale for $2.19. Shipping is free w/ Prime, or free on $25+ orders.
Features:
- High impact frame
- Non-conductive & non-corrosive
- The V-Groove edge fits on pipe & conduit
- The 3 vials read plumb, level & 45 degree
- Tapered end fits easily into tool belt or pocket