120 



GREENHOUSES 



outside of a roof, a common means of sup- 

 port for the workman is a plank supported 

 by brackets resting on the sash bars or on 

 every other sash bar. 



Glazing Ladder. Another device used 

 more in painting than in glazing is a ladder 



Fig. 65. Glazing ladder used in glazing and painting 



made by nailing cleats on one side of a plank 

 for foot holds, and on the other side longer 

 cleats so that they will rest across at least 

 two sash bars and thus distribute the weight. 

 The ladder is held in place by hooks which 

 reach over the ridge. 



