Quote Originally Posted by palerider7777
well i don't know what else i could get thats the only one iv'e seen and they were in the garden area of home depot are there better ones?? and if so where?how do u know if one is good or not??
You can look online to find different types that are available and what the prices should be and then you can order online or find what you need at a local store.

...maybe be pick up a $10 one on the way just to have for now, and as a backup.

You don't really know if one is good, so you need a backup to check on your primary. Unfortunately, you have no way of knowing if your secondary is accurate so you either have to put a little faith in the instruments or start thinking redundancy in terms that get real anal, real quick.

PC :smokin: