In the standard by A.D. Botvinnikov, V.N. Vinogradov, and I.S. Vyshnepolsky, Figure 88 (and specifically variation "и" ) is part of a complex exercise focused on reading and analyzing detailed drawings . Context of Figure 88
: Look at the top view and front view. Match the visible and hidden lines (dashed) between the two views to understand the depth and position of internal holes. uchebnik po chercheniju 9 klass botvinnikov smotret ris 88 i
: A central vertical hole (often stepped or through-hole) and additional horizontal slots or grooves. In the standard by A
: You are often asked to determine which of several provided sectional views (marked with numbers) correctly represents the cross-section of the part at a specific plane. Steps to Solve Exercises for Fig. 88 In the standard by A.D. Botvinnikov