This is a maneuvering board.
Or a SPA 25 scope head, calibrated tounge depressor, grease pencil, and a stern warning to the rest of the bridge watch not to change the range scale. :)
My Senior Chief OS (Operations Specialist) was a former Radarman. He had a running battle with the ETs (Electronics Technicians) to the point when he told them something was off with the radars they just went and fixed it because he was always right. He was always tweaking the radars.
One afternoon while we were underway, the XO wandered into combat and peaked over the shoulder of the OS on the SPS-10 scope (Surface Search Radar). He spoke up, "Damn it Senior Chief. I told you to stop tweaking the radar. The Captain will expect it to always work this good."
WWG1WGA
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)