Interesting find here. looks like its a laser that gets mounted to the side handle of your chainsaw and helps aid with measuring the length of logs to cut.
	
	
		
			
				
					
						 
					
				
			
			
				
					
						
							 www.firewoodprosizer.com
						
					
					www.firewoodprosizer.com
				
			
		
	
	
		
			
		
		
	
				
			 
					
				Firewood ProSizer: A laser attachment for chainsaws to guide your cut | Firewood ProSizer
Laser measuring tool for your chainsaw. No need to paint, chalk or use your bar. Let the laser guide your cut for same size logs.
				 
	 
	 
 
		 
 
		 
 
		 
 
		 
 
		