Library Grid view missing thumbnail size adjustment

[robertv52286075]

Need some help, I am sure its probable my error but some how I "lost" the size adjustment slider on the botom of the grid view screen.  I can still adjust the size with +/- keys, but the bottom of the grid is missing and tab.shift tab... do not bring it back.

Thanks Bob 

[Rikk Flohr: Photography · Accepted solution]

[ T ] (for Toolbar)

[tmickow]

And if the toolbar is on, but the slider is still not showing, click the triangle on the far right of the toolbar and make sure Thumbnail Size is checked.

[elianoimperato]

If I want to see the Thumbnail slider I've to change my display resolution...

[robertv52286075]

Thank you both for helpful answers.  Knew it was user error.

[Robert_Daniella_3913]

THANK YOU!! 15 YEARS AND I STILL COULD NOT FIGURE THIS OUT!! "T".