A countertenor is a type of classical male singing voice whose vocal range is equivalent to that of the female contralto or mezzo-soprano voice types.
Types of Compound Bows. Compound bows are classified by the type of cam system they use (called the bow eccentric.) The most popular types of compound bows on the market are Single Cam (sometimes also called One Cam or Solocam), Hybrid Cam, Dual Cam and Binary Cam. Less common designs like Quad Cam and Hinged are a little harder to find.
The left bow is marked AMO 58 the next bow is marked 60 and the remaining two are not marked for length. They are all Bear Archery Bows The 3rd bow is a static recurve wih the aluminum lamination and a running bear logo, The 4th bow is a laminated bow signed by Nel's Grumley with no weight or length on it.