Standard Postcard-a standard postcard mails First Class at current rate of 35Â¢. The smallest maiLabel size for ANY postcard is 3Â½â³ x 5.â³. The largest postcard size for mailing at the 35Â¢ rate is 4Â¼â³ x 6.â³. The paper thickness must be at least 0.007 â³ and not more than 0.016 â³ in thickness.
1 Prohibits head first diving in water depths less than 8 feet. 2  Restricts use of starting blocks to competitive swimmers or swimmer training activities.  Requires new installation (effective October 7, 1992) of starting blocks to be in the deep end in at least 6 feet of water.
If you have an advanced open water certification, you are certified for dives to 100 feet. It is interesting to note that this has changed over time. When I received my open water certification, it certified me to dive to 130 feet, the maximum depth for recreational diving. Today, one has to get two additional certifications to dive to that level (advanced open water and deep diving). To learn more, you can visit our scuba diving certification page. Anything over 130 feet is considered technical diving and encompasses another level of training.