1) Proctoscope 
(from the article `diagnosis`) ...rigid, 25-centimetre sigmoidoscope is less expensive and allows direct visualization of the bowel, but it is less popular because of the greater ...
<instrument> A small viewing scope that is inserted into the anus for the purpose of viewing the anal mucosa. ... (27 Sep 1997) ... 
(a´nә-skōp) a speculum or endoscope used in direct visual examination of the anal canal.
Type: Term Pronunciation: ā′nō-skōp Definitions: 1. A short speculum for examining the anal canal and lower rectum.
Anoscope: An Anoscope is an instrument used for visualization of the anus and lowest portion of the rectum. An anoscope is a tube that can be inserted with a lubricant into the anal canal. When the tube is inserted, a light source in the tube allows the examiner to visualize the wall of the anus and lower rectum. An anoscope is used to identify abn...
anoscope 1. An instrument for visual examination of the anal canal.2. A speculum (an instrument that exposes the interior passage or cavity of the body) for examining the anus and lover rectum.
proctoscope.