Spectra-Physics 66902 Lamp Housing Element Plano-Convex 1.5 In Flange - AS IS 154804671097 but when the arrows are

but when the arrows are pushed

Manufacturer Honeywell Model Number 3820i

Unit has some permanent marker writing on it

Manufacturer Chemglass SKU 19-65221 Ref 23-92620

Spectra-Physics 66902 Lamp Housing Element Plano-Convex 1.5 In Flange - AS IS 154804671097 but when the arrows areThis item is sold AS IS. No returns or exchanges are accepted. Condition For parts or not working Description We are unable to test this unit. also, the unit is missing a few screws and may be missing parts. For this reason, we are selling the unit AS IS for parts repair as a non working or incomplete unit. We have not tested any further, may have unknown issues we are not aware of. See all item photos for the condition of the unit. No power supply