Patent ID: 9574864
Date: 2017-02-21
CPC Classifications: B05C,B05D,G01B,G03F,H01L

Claim:
1. A gauge comprising: a body configured to removeably mount to substrate chuck of a spin apply coating tool, said body rotatable about an axis passing through a center of said chuck; an extendable arm having a first end mounted to said body, said extendable arm having a retracted position and a deployed position, a second end of said arm including an upper finger and a lower finger, said upper finger configured to be positioned above a rim of a coat apply bowl and said lower finger positioned below said rim of said coat apply bowl in said deployed position when said coat apply bowl is mounted in said spin apply tool; and wherein said gauge provides an error indication when said gauge is rotated about said axis and said coat apply bowl is not installed in said spin apply coating tool correctly.